• Double-Edge Sword: This mastery is fairly underwhelming, and I would avoid getting it. The reason being is it's kind of hard to judge 1.5% extra damage and it just overall does not feel worth it. If you are getting focused often, you basically take 1.5% x 5 more damage, which drastically reduces your survivability. You could argue that better positioning would help, but sometimes you're just going to take damage. If you're melee, it seems a bit better, but again, you will eventually take more damage than you actually deal, which makes it not worth it to me.
  
• Fury : 5% attack speed is a pretty good investment. It makes up for your Attack Speed per Level not kicking in at level 1, and 5% is a little under half of a Dagger. If you're going to use some auto-attacks, it's not a bad investment. The other option is Sorcery.
  
• Sorcery: If you aren't as reliant on auto-attacks, 5% cooldown reduction is fine too. It's hard to even this out to 40% without wasting some of it, but 5% could help you in certain situations. On top of Ionian Boots of Lucidity to get a quick 20% CDR. As a caster/mage, this is a decent choice to invest in.
  
• Butcher : This is what I would put a point in over Double-Edged Sword. It helps you last hit early and adds a bit of extra damage when doing jungle camps and/or Dragon and Baron. Also applies to single-target spells, now.
  
• Feast: This mastery can be a great addition to sustaining in lane. The numbers are pretty small, but that's what masteries are. They aren't huge bonuses. It's nice to get this if you use Mana, even if it is only 1 mana per kill. This is purely a preference point.
  
• Expose Weakness : If you don't need Butcher , you can put a point in this to deal a bit more damage. Your own damage increases as well, by 1%. No debuff icon shows for this effect, so you'll just have to keep in mind it only lasts for 3 seconds. This is mainly a preference point.
  
• Brute Force : Obvious choice for us since we are AD champions. Equates to a Long Sword at level 18.
  
• Martial Mastery : Another obvious choice. This is worth a little under 2 AD quints. Great for early game.
  
• Spell Weaving : It's not too bad of a point because you auto-attack a large amount anyways, but sometimes you need to use your skills immediately in trades.
  
• Executioner : One of the better things we can put our points in. We are damage dealers, and we need to finish off targets quickly. This helps us by dealing 5% extra damage, which adds up.
  
• Blade Weaving : Stack it and keep it up to get the bonus damage with Jayce's Lightning Field.
  
• Warlord : This seems pretty underwhelming, and it is, but it helps us deal more damage, so we choose to get it. It definitely adds up as we get our items.
  
• Dangerous Game : This mastery gives you a small boost in teamfight sustain as long as you get kills. If you don't, it doesn't do anything. Not entirely sure if it works off Assists, even though it says it doesn't; there have been instances where I've gotten it without getting the kill. This is purely a preference point.
  
• Devastating Strikes : 6% armor pen and magic pen is pretty good for us. It helps us deal more damage.
  
• Havoc : The reason we go 21 points: to deal more damage. If you're already this far in the tree, might as well get it.

• Block : Great early game; negligible late game. Keep in mind this reduction applies BEFORE resistance calculations, so it is best early game. Think about it basically reducing the target's AD by 2. These are probably the best points to dip into if we choose Defense.
  
• Recovery : Pretty mediocre, but it helps us a bit early game. Nothing better to get to advance further.
  
• Enchanted Armor : If you want to wait for the late game for a bit more Armor and MR, you could try this, but it is pretty much unnoticeable. You get around 2-5 points at most.
  
• Veteran Scars : The main reason people go the Defense tree. +36HP at level 1 is pretty good as it is a bit over 1 HP quint.
  
• Juggernaut : This is basically a more late-game oriented version of Season 2 and 3's Durability. It's a better point investment than the other options available, and one of the reasons to go 9 into Defense. You get +30HP for every 1000 HP you have. Late game, this will usually give you +60 HP. Not a bad point, but it definitely takes awhile to feel its effects.
  
• Hardiness : This used to be a tier one mastery, but it was so effective it's been dropped down to tier 3. This is one of the best masteries for early game, and I highly recommend it.
  
• Resistance : Same as Hardiness . Magic Resist is not as necessary early, but it is still good if you are against AP nonetheless.
  
• Reinforced Armor : Great single point, as crits hurt a lot late game with an Infinity Edge. Keep in mind that it doesn't really do anything early game, though, except against some champions like Tryndamere.
  
• Perseverance: Great mastery point, and probably the best thing out of this tree. You regenerate a huge chunk every 5 seconds, since it isn't added to your HP per 5 stat like it normally would.
  
• Second Wind: This is a decent point, but largely optional. I choose to get it for the situations that it could actually save me. It's basically a mini-Spirit Visage when you are below 25% health, which can happen in clutch situations.
  
• Legendary Guardian : Probably the second best mastery you could invest in. It's pretty hard to get all 4 points in this, though, because of all the other good masteries ( Perseverance + Second Wind). You can get up to 20 Armor and 10 Magic Resist for free in a teamfight, which is great.
  
• Tenacious : Free 15% tenacity which is good throughout the whole game. It does feel pretty underwhelming as a 21st point, but you should still get it.

• Fleet of Foot: This equates to a Movement Speed quint, which is nice for us. I choose to get this because we need all of the movement speed we can get due to how hard it is for us to get a lot of.
  
• Meditation : Mana regen helps us stay in lane longer and ensure we have mana to trade and perform all-ins better. These are one of the best reasons to invest into Utility. 3 Mana Regen per 5 usually equates to over 3 levels worth of mana regen, and is equivalent to a Faerie Charm.

Flash is a core spell on Jayce as it allows you to quickly adapt to the situation, change your positioning at any needed time, or most importantly make plays. The ability to surprise enemies with a Flash& To The Skies! and enable you to land kills makes this spell more than worth it to take. Most of the time improving your play with a champion can come down to simply how well you can Flash into your combo before the enemy can react.


Ignite is a spell that is very useful as a true damage in fights and can help you secure kills that you may not have gotten. The reason this spell synergizes well with Flash is that you can Flash into your combo and Ignite them as they Flash away, giving you a kill you normally would not have gotten. The healing reduction is a nice bonus if the enemy team has any healers. If you would want to remove a spell from primary for something else, I would remove this and keep Flash.

Teleport is a spell that got a lot of buffs with the season 3 patch and is a really strong spell now. Now you may be saying Teleport did not receive any buffs. But it did indirectly. Both home guard and distortion boots synergize amazingly well with Teleport. Now as far as the spell itself goes take it when you are fighting a lane in which the enemy is tanky or you wont be killing much Malphite or if you want to split push.


Exhaust is way underrated in the top lane and actually should be taken versus pretty much anyone with burst but no sustain Example: Riven, Wukong, Fiora. The effects of this spell should only give you kills if the enemy try to duel you, unlike Ignite which can be used for a burst kill. But this spell will scale into late game and will be able to cripple an enemy burst champion or ADC in a fight.



Ghost is a strong spell. In full honesty it is better than Flash as far as escaping and gaining ground goes, BUT there is something it does Flash doesn't. It gives a warning. When someone sees Ghost pop they will know you are trying to do something and take that as a back-off sign making it weaker than Flash for getting kills in lane.


Heal is a good spell pretty much if you want to bait your opponent into making a mistake. It scales slightly well into late game if no one else on your team has it, but that is pretty much it as far as its uses go.


Barrier is an amazing spell and in my opinion its good more than Heal at early game in tower diving or when your jungler is ganking as if you are low in health it shield you for some damage, for you or your jungler to take the kill. Also at late game it make you survive in team fight when u are taking many damage.

Hextech Capacitor is a passive ability that activates whenever Jayce uses his ultimate, Mercury Cannon Transform Mercury Hammer , granting him bonus movement speed and no unit collision for a short duration.

• Not the best passive but the 40 movement speed is great for chasing or escaping.
• Remember this movement speed is a base value so % move-speed enhancers such as Ghost or your Acceleration Gate give you an even larger move-speed increase if you have this on.
• When you are running back to lane after a buy, switch forms and make an approximation of how much distance you can cover with your passive's movement speed increase. It is better to find out on your way to lane then try and make a guess and pray you were right in the middle of a tower dive.

To The Skies! is a targeted dash ability that brings Jayce to his target's location, dealing physical damage and slowing his target and enemy units in a small radius around it on arrival.

• procs spell vamp and Rylai's Crystal Scepter's slow similarly with all area of effect spells and abilities with diminished effect.
• pops Spell Shield.
• will not damage Black Shield but the slow will be negated.
• does not follow the target's movements; if the target uses a movement ability or Flash, Jayce will still land at the target's original position.
• will bring Jayce to a location linearly in front of his target.
• This spell is great for a gap closer, It has decent burst specially with its 1.0 bonus attack damage ratio.
• If you are able to hit this ability in the middle of the enemy team it is like getting a Randuin's Omen active on them all, however factor the risks this can cause to your own life before jumping in like an idiot.
• This skill is very good at pushing the lane. Watch out when you want to harass an enemy champion with this skill as if you hit minions with it this can EASILY push your lane.
• This skill CAN BE AVOIDED if the enemy flashes as you start to jump. If they do this you dash to the area they were at and deal your AoE damage/slow where you land to anyone nearby.

Shock Blast is a collision linear skill shot that deals physical damage in an area around the first enemy unit it hits or after reaching its maximum range. If Shock Blast is fired through Acceleration Gate, its projectile speed and range are increased by approximately half their original value, and its damage is increased by 40%.

• procs spell vamp and Rylai's Crystal Scepter's slow similarly with all area of effect spells and abilities with diminished effect.
• pops Spell Shield.
• will not damage Black Shield.
• briefly reveals Fog of War in the area where it explodes.
• range increase when used with Acceleration Gate is not affected by when the projectile actually passes through the gate; the boost simply re-targets Shock Blast to reach a location further along the same path of travel, but further away from Jayce's original position.
• Unlike most tops Jayce can harass from a range Shock Blast is great range poke with a 1.2 Bonus attack damage ratio. Combined with Acceleration Gate you can pick off many low health targets under there tower. I put 1 point in To The Skies! / Shock Blast at level 1 and rank it up first.
• This skill gives sight on the area where it explodes meaning it can be used as a scouting ability. Some other benefits to this skill as a scouting ability is that if it hits an enemy on the way to the area you want to scout, you see them AND they take free damage. Also if you combine this with your Acceleration Gate you can scout out places really far away from a relatively safe distance.
• When teams begin grouping up to fight late game, throw your Shock Blast in as much as possible at the enemy carries. If you poke their team well enough you can have them out of the fight before it even starts.
• Just because this is a ranged skill do not be afraid of using it close range. If the enemy is up in your face take the free shot, you hit rate will be 99% (the 1% is if you smart cast, turn and shoot it backwards xD).

Lightning Field passively causes Jayce to gain an amount of mana whenever he auto attacks an enemy unit while in Hammer Stance. When activated, Lightning Field is a point blank area of effect ability that deals magic damage to enemies in a wide area around Jayce over 4 seconds.

• procs spell vamp and Rylai's Crystal Scepter's slow similarly with all area of effect spells and abilities with diminished effect.
• does not pop Spell Shield.
• will damage Black Shield.
• has no cast time and does not interrupt Jayce's previous orders.
• Jayce may freely act while Lightning Field is active.
• the Passive mana on hit is decent, allows you to harass more often. The active is alright late game for some extra AoE damage.
• This ability applies a BUFF to you for its duration meaning it does not require you to actively be casting it AS WELL AS meaning if you switch forms while the effect is still going it will remain on you.
• In lane this skill can be a mana burner if not use properly, only use this if you plan on sticking around enemies for the full duration. If you are just going in for a quick harassment combo chances are you won't need it.
• Use this skill as a "Warning" to enemies. If an Irelia or someone jumps on you, use this while you Q-E them. Most of the time they will get scared of your burst and back off while you still have your W effect on.

Hyper Charge is a self-targeted ability that grants Jayce 300% bonus attack speed for his next 3 auto attacks within 4 seconds. These 3 attacks deal a percentage of his regular attack damage depending on its rank.

• will grant Jayce maximum attack speed (2.5) by itself. However, combined with attack speed reductions such as Nasus's Wither, he may not achieve maximum attack speed.
• will reset Jayce's attack timer on cast.
• The enhanced attacks can critically strike and will stack with critical strike damage multiplicatively (i.e. at rank 5 a critical strike with no modifiers and Hyper Charge active will deal 130% * 2 = 260% damage).
• The enhanced attacks will not pop spell shield.
• The buff lasts for 4 seconds, total, regardless of how many attacks were used.
• The buff will persist even if Jayce switches into Hammer Stance.
• Good late basically turns 1 auto attack into 3 attacks dealing Varied damage depending on the rank. I put 1 point in Lightning Field / Hyper Charge at level 2 and rank it up second.
• With 3 autos you can kill a ward as soon as its laid if you attack it fast enough. If you see an enemy with a ward and know where they have been laying it, it may be of worth to camp out in the brush and kill it as it is dropped. This will waste 75 of their gold , grant you 25 gold, and most importantly deny them sight for 3 mins (unless they go back and get another ward).
• Remember it DOES give max As, If you have REALLY fast hands it is possible to apply a Frozen Mallet proc to 3 different targets with just this skill (Though it is really hard to do).

Thundering Blow is a single targeted ability that deals magic damage to a target enemy unit equal to a percentage of the target's maximum health. Additionally, Thundering Blow knocks the target back a set distance over 0.75 seconds.

• procs spell vamp and Rylai's Crystal Scepter's slow similarly with all single target spells and abilities with full effect.
• pops Spell Shield.
• will damage Black Shield and the knockback will be negated.
• Similarly with Alistar's Headbutt, the target is "suppressed" for the duration it would take to travel the entire distance of the knock-back, if the target is knocked back near a wall or structure and cannot travel the whole distance.
• Pairing Thundering Blow with To The Skies! can put out some great burst and allows you to put distance between you and your target. Also if ganked Thundering Blows knock back can save you.
• This skill deals MAGIC DAMAGE, meaning getting magic penetration makes this skill do more damage. Another good part about this being magic damage that scales off AD is the facts that this allows you to deal HYBRID DAMAGE which is much harder to build against then If you were all AD. This means the stack defense build strategy does not work against Jayce.
• If the enemy is in between you and your tower (Trying to cut you off) shoot them into tower with this and follow it up with a To The Skies!. Many times this can score an easy kill.

Acceleration Gate is a linear area of effect ability that increases the movement speed of all allied champions that walk through it. Additionally, firing Shock Blast through the gate will increase its projectile speed and range by approximately half of their original values, and its damage will be increased by 40%.

• has no cast time and does not interrupt movement if Jayce is in range of the target location.
• does not increase the movement speed of pets or minions.
• reveals Fog of War in the area where the gate generators are.
• Acceleration Gate is one of your most used spells. It helps for initiating, escaping, poking better. Acceleration Gate is really good paired with Shock Blast increasing its speed/damage making it very hard to miss. I put 1 point in Thundering Blow / Acceleration Gate at level 3 and rank it up last.
• If you throw this skill out before or after you R you can combo the move speed bonuses together and outrun most champions in the league.
• If you want to use this skill quickly and back out (Clearing waves/poking) you can lay the gate on top of you and Shock Blast giving you the enhanced shot AND the Movement Speed.
• The edges of your gate give sight although the beam itself WILL NOT give sight. If you need to use this skill for scouting be sure you get the edges in the area/areas (you get sight of 2 points) you want to see.

Transform: Mercury Cannon is a self-target ability that changes Jayce's Mercury Hammer into its cannon counterpart, granting him ranged auto attacks and a new set of champion abilities. Additionally, Jayce's first attack after entering Cannon Stance will reduce his target's armor and magic resistance for 5 seconds.

• Transform: Mercury Cannon's on-hit effect does not affect turrets or other structures.

Transform: Mercury Hammer is a self-target ability that changes Jayce's Mercury Cannon into its hammer counterpart, granting him increased armor and magic resistance along with a new set of champion abilities. Additionally, Jayce's next attack after entering Hammer Stance will deal bonus magic damage.

• Transform: Mercury Hammer's bonus damage can affect turrets and other structures.

• Both Transform abilities have no cast time and do not interrupt Jayce's movement.
• Both of the auto attack modifying buffs from Transform have no set duration, and will not expire until Jayce lands an auto attack.
• However, the buffs will not persist if Transform is used again; for example, Hammer Stance's bonus magic damage buff will be removed if Jayce switches into Cannon Stance.
• If the attack misses for any reason ( Blinding Dart, Riposte, Counter Strike, Aegis Protection) the buff will not be expended.
• Using either Transform ability will trigger Hextech Capacitor.

1-Heh. Gotcha!

2-Did I Scare You?

3-Feel Free To Give Up Now

1-I'm Going To Enjoy This

1-Hammer Time!

1-Cannon Engaged!

: Useful against heavy AD champion or an AD bruiser, give you +25 Armor & block 10% of incoming damage from basic attack. its passive does not reduce the damage of on-hit effects (does not include attack modifiers). Grants damage reduction specifically against auto attacks. It is a good pickup versus teams that feature many sources of physical damage, and strong auto attackers. It also reduces physical auto attack modifier spells such as:

• Yorick's Omen of War
• Wukong's Crushing Blow
• Volibear's Thundering Smash
• Vayne's Tumble
• Trundle's Chomp
• Talon's Noxian Diplomacy
• Sivir's Ricochet
• Shyvana's Twin Bite
• Riven's Runic Blade
• Renekton's Ruthless Predator
• Nidalee's Takedown
• Nasus's Siphoning Strike
• Miss Fortune's Double Up
• Leona's Shield of Daybreak (only the physical portion)
• Irelia's Bladesurge
• Garen's Decisive Strike
• Gangplank's Parrrley
• Fizz's Urchin Strike
• Ezreal's Mystic Shot
• Draven's Spinning Axe
• Caitlyn's Headshot
• Blitzcrank's Power Fist
• Fiora's Blade Waltz (each tick is considered an autoattack)

: Useful against CC heavy teams, give you +25 Magic Resist and 35% Tenacity. A good mid lane item usually used against champions like: Ryze, Kassadin, LeBlanc, Lux, Brand, Gragas, Kennen , etc.

: The best boot for Jayce good for all lanes if there is no threat of being killed, good for reducing the time it takes between Shock Blast/ Acceleration Gate pokes. With blue buff, you can spam your skills without fear of running out of mana. Get this if you need to seige towers and poke instead of full on team fights. These boots are what I usually get now, to maximize poke damage.

: Don't buy this unless you are playing ADC Jayce or you can also change it for other boots as it is not an essential item.

: A really good boot against slow effects, this is the last boot that come to your mind as it can be replaced buy any other boots. will also reduce the potency of self slows, such as Varus' Piercing Arrow and Vi's Vault Breaker.
The defense mastery Relentless stacks multiplicatively with Boots of Swiftness to provide a total of 36.25% reduction in the potency of slows.

: Offers a nice active that procs on Shock Blast, making it deal rough 500-600 damage with the Acceleration Gate multiplier. It is also reliable, in that you will always land auto attacks and spells like Thundering Blow and To The Skies!, both of which proc Muramana's toggle. Can early make you weaker but it actually boost your mid-late damage by a lot and ables you to do consistent poke without having to steal the blue buff from your mid.

: The best item in terms of attack damage. At maximum stacks it offers a whopping 100 bonus AD. If you find that you need sustain, such as if the enemy team has a lot of poke, then you can buy this. I tend to buy this right after Manamune.

: Armor reduction and penetration effects stack, allowing Jayce to benefit from Black Cleaver shred , penetration runes, and items such as Last Whisper. The armor-shred passive triggers not only auto-attacks but on any effect which deals physical damage. Items with effects that deal physical damage on hit such as Sheen and Blade of the Ruined King won't apply more than one stack of the armor-shred in addition to the stack applied by a champion's auto attack. Good for poking and deal more damage against heavy tank champions like: Garen, Malphite, Wukong, Volibear, etc.

: Becomes more effective at penetrating armor than The The Brutalizer when an opponent has more than 28.6 armor. It becomes more effective than Youmuu's Ghostblade at 57.1 armor. It becomes more effective than 5 stacks of the Black Cleaver's debuff (+ flat pen) at 100 armor. Provides more raw percent-based armor piercing than the full five Black Cleaver stacks (35% to 25%, respectively), but only attacks from the wielder will benefit from penetration.

: I would consider this, one of the best single items on Jayce. It has everything you need a slow, short to auto attack buff and critical chance + attack speed. This item is a must for you if you want a balance with sustain and damage.

: This item is often built on Jayce because its active allows them to effectively chase important targets and deal a reasonable amount of damage. I like that the on-hit effect deals physical damage, so Armor Penetration is a little more viable with it, and it has a nice active with attack speed and lifesteal. Useful end game against high health champions. Good also against teams that lack armor.

: This item helps Jayce against teams with strong magic damage. The shield can block the initial burst of damage from a enemy champion and give Jayce an opportunity to attack or retreat. It is very useful against AP casters with long cooldowns, such as Morgana and Ziggs. More magic resistance will increase the effective shield value, as more magic damage will be required to destroy the shield.

: I sometimes get this immediately as my major damage item after Manamune. It has amazing synergy with your Hyper Charge. Infinity Edge is better when you want to do damage with your auto attacks.

: works best as a late game upgrade for Jayce from Quicksilver Sash. It is a great escaping tool, but in order to utilize the movement buff and the removal of crowd control, the active is best combined with blink abilities such as Flash. Work against champions that have lots of crowd control like: Ryze, Zyra, Kassadin, LeBlanc, Morgana, etc.

: The area damage inflicted by the Gauntlet is only the 125% of Jayce base Attack Damage coming from the item. The effect will trigger against towers. The area damage and slow still apply around the tower as normal.
The slow proc does stack with Icy slows from other items with the same named item effect: Frozen Mallet, Phage and Trinity Force.

: You will only use this in jungle build or in the blue build for Jayce this item let you farm well, Basic attacks and spells that do not inflict damage-over time, deal 4 + (2 × level) bonus true damage over 3 seconds on hit. It works like an Ignite on target either a champion or a monster, this help you steal baron or dragon by your skills more effective or getting a kill on a low health champion that was needed an Ignite which was on cooldown. Also increase your poke damage allowing you to harass your target better.

: This item usually charges much faster by moving than attacking. Considering a movement speed of ~400 units per second (around average), moving gains 20 charges per second, while an average attack speed of ~1.25 attacks per second grants 10-15 charges per second. The lightning proc effect's damage is affected by critical strike damage modifiers like Infinity Edge. This is the only case of critical strike damage improving an on-hit effect. Can get you a kill without touching the target by the charge that come out when it is fully charged = 100 charge. Recommended when playing Jayce ADC and you have already bought Infinity Edge.

: Jayce has already its passive but it really proc well with the Infinity Edge and Hyper Charge leading to every second or third hit to be a critical strike. Recommend building it in ADC build only as you don't need it on top lane or mid or jungle and it can be trade for a Statikk Shiv.

: Its Unique Passive: +20 armor penetration has more armor penetration than Black Cleaver without its 5 stacks. Its Unique Active: Gain +40% attack speed and +20% movement speed for 6 seconds (4 seconds for ranged champions) (45 second cooldown). Also give +30 attack damage, +15% critical strike chance, +10% cooldown reduction also proc well with the Infinity Edge and Hyper Charge.

: In combination with Infinity Edge can greatly increase the damage of Hyper Charge. At 400 AD, Hyper Charge would then deal 4000 damage.

: The passive can be a very effective counter to champions with healing abilities, such as Fiddlesticks's Bountiful Harvest, Soraka's Astral Blessing, Sion's Cannibalism, Aatrox's Blood Thirst and especially Dr. Mundo's Maximum Dosage; or against any champions that build lifesteal or Spell Vamp. The passive does not deal any damage itself, unlike Ignite or Tristana's Explosive Shot, and as such, will not delay stealth or passives such as Malphite's Granite Shield or Garen's Perseverance. The passive also will not affect additional health from abilities or shields, such as Lulu's Wild Growth or Morgana's Black Shield. This a situational item don't get it unless you really need it.

: Is a strong counter to Thornmail, as it not only provides the user an on-hit effect with their auto-attacks that ignores Thornmail's passive, but it also provide magic resistance that reduces the incoming magic damage from Thornmail's passive. Wit's End also increases the user's magic resistance per auto-attack and reduces the enemy's magic resistance, thus allowing the user to deal more damage with Wit's End's on-hit passive than what Thornmail can reflect back. Use Hyper Charge can also let him very quickly build the passive stacks on Wit's End and offers higher magic resistance than Maw of Malmortius if used right also add the extra 42 bonus magic damage for your basic attacks and really great for AP tanks like Singed.

: Is an excellent choice for Jayce, granting him the movement speed and Tenacity to stick to key enemy targets while supplementing his DPS. It provides you more freedom in your choice of boots, specifically if want Tenacity but do not want to commit to Mercury's Treads for it. Is an excellent choice for player who have a fully stacked inventory and want to sell Berserker's Greaves or Mercury's Treads for a more expensive alternative. Only buy this item after you finish your build and only swap it for boots when the other team has alot of crowd control, but in genral, you will lose movement speed but you will gain considerably good stats overall.

: Once he has obtained at least 17% cooldown reduction, Jayce is capable of permanently maintaining all eight stacks of Guinsoo's Rageblade outside of combat, as his Transform: Mercury Hammer and Transform: Mercury Cannon are both free to cast. I know it could be a bad item on Jayce but he can use it so i add it in the situational items but it's out to you to use it or not.

: In most circumstances, the most efficient way to build Frozen Mallet is to complete the Phage early, and continue to build other items; Phage provides a slow chance and some health to increase survivability early without holding up the rest of your build too much. The Frozen Mallet may also be built earlier for a more consistent slow. combines well with Jayce's exceptional chasing abilities by slowing the opponent and making it extremely difficult to escape from him. It also grants a large amount of health, letting him stay in a fight for much longer.

: The healing boost of Spirit Visage (+20% to healing) affects its passive, causing it to restore 36% health in total. I cannot tell how many times I've been saved by this thing. The passive is great, and the Armor and MR bonuses are great. This is a great item when you're backdooring or you just need to keep fighting/running longer.

: Is a strong counter to Blade of the Ruined King, as it provides armor, health, an attack speed slow and a movement speed slow and the two actives mostly mitigate each other. It is also useful against champions that are highly reliant on auto-attacking as means of damage output ( Tristana, Kog'Maw, Vayne, Teemo and Jax).

: At 3000 health, the unique passive grants the same amount of attack damage as a B. F. Sword (45). Atma's Impaler's passive does not include bonus health from masteries, despite having the same tooltip as Warmog's Armor which benefits from it. This is most likely due to a bug. Is one of the most cost-effective items in game, surpassing Pickaxe on any lvl 18 AD champion (without HP items). Can be combined with items such as Frozen Mallet and Warmog's Armor to utilize both damage and survivability.

: This item gives the most health in the game. If you're going tanky I'd highly recommend this. Health means living longer, and Jayce is a short-ranged carry, and he needs to be alive to get his damage out.

: This item really gives the 2nd most amount of armor in the whole game. It grants you a great 90 armor and 20% CD, and a unique aura of reducing the attack speed of nearby enemies by 20%. You need to be in range in order to activate this aura. Overall gives massive combat stats and the armor which you need for heavy AD teams.

: Okay this item is usually build by the support but if your support is so noob or want build it or your jungler also don't want to build it you can buy it to benefit in teamfights and make you win it in most of the time. Also it's a situational item so it's up to you to get it or not.

: Okay this may not be a popular item for Jayce but it is useful in some situation like if you want magic resistance, 20 cooldown and 20% healing effects which proc well with any Vampiric Scepter item or a Guardian Angel.

: The passive AoE damage can be stacked by building it on different champions because Sunfire Aegis's passive is not an aura or a debuff. It deals AoE damage over time, can improve tanking ability of turrets because of the bonus health and armor it provides. This + Lightning Field will make you a living AoE man.

: This is very critical especially if there is about 4-5 AD on the other team. It gives a unique passive of returning back 30% of the damage in magic damage from basic attacks. This is also helpful when you notice about 2-3 of the enemies bruisers or ADC are really fed. You'll really need these just to minimize the damage they deal. Note, don't get this if the enemy champions got Wit's End as they will neglect the passive of the Thornmail so it will be a waste of gold.

• Jayce can successfully be built as an AD carry or tanky AD caster depending on his team's needs. The AD caster build largely focuses on his Mercury Hammer and his carry build revolves around use of his Mercury Cannon, though both builds make use of both stances.
  
• Playing and building around Mercury Hammer is generally easier of the two as the transition from ranged to melee is a easier and less-risky one for a champion that has built significant durability items, while a transition from melee to ranged is obviously beneficial for chasing down targets or kiting enemies - and without durability items, one is unlikely to live long enough to allow a good transition from melee to ranged.
  
• Jayce synergizes extremely well with movement speed items due to his many position-dependant abilities. Consider taking items and spells such as Boots of Swiftness, Zeal and Ghost.
  
• Trinity Force is an extremely useful item for Jayce regardless of his build, as he benefits at least moderately from all the stats it provides. He can proc its passive effects regularly as he will be making repeated use of his spells and auto attacks in combat.
  
• Building an early Sheen transforms Jayce into a deadly pusher, his Lightning Field and Shock Blast make farming minion waves exceptionally easy and the Sheen procs from his Transform: Mercury Hammer and Hyper Charge will do heavy damage to turrets.
  
• Stacking attack speed on Jayce can be largely redundant as he already has a powerful attack speed steroid in the form of his Hyper Charge. Focusing instead on attack damage items can be more beneficial on him.
  
• Because of the passive mana recovery on his Lightning Field, Jayce is more restricted by his health than by his mana in the laning phase. Building some early health regeneration or life steal with items such as a Rejuvenation Bead or Vampiric Scepter can allow Jayce to stay in a lane for a very long time, provided you can afford to push the lane by hitting creeps.
  
• Offensively, most of Jayce's damage is on the physical side, making armor penetration items such as The Brutalizer and Last Whisper very effective on him.
  
• Black Cleaver is a very strong item for Jayce when combined with his Hyper Charge and Transform: Mercury Cannon , as he can very quickly get all three reduction stacks on an opponent and cut a very significant portion of their armor away.
  
• Cooldown reduction can be a useful stat to itemize for on Jayce because of the utility his spells afford him.
  
• The active effect of Shurelya's Battlesong stacks well with the team-wide movement speed boost his Acceleration Gate gives, allowing Jayce and his team to relocate extremely rapidly in an emergency. It also builds out of Philosopher's Stone, an item which will largely solve any sustain problems in the early game, and Kindlegem, granting much-needed cooldown reduction and health.
  
• Against a magic damage-heavy team, Jayce can opt to use either a Maw of Malmortius or Wit's End as sources of AD-focused magic resistance. A Maw of Malmortius arguably benefits him more because of Hyper Charge's attack speed steroid and superior attack damage scaling, but by the same token Hyper Charge can also let him very quickly build the passive stacks on Wit's End and offers higher magic resistance.
  
• Infinity Edge is an extremely powerful item on Jayce when using Hyper Charge at max rank, as the enhanced attacks can critically strike. With an Infinity Edge critical hits will deal 250% of his damage, and with a max ranked Hyper Charge, the enhanced attacks stack with critical strikes multiplicatively. This can ultimately result in up to three critical hits doing 325% damage.
  
• Manamune is a great item on Jayce. An early Tear of the Goddess allows for longer sustain in lane and the toggle from Muramana procs on Thundering Blow and all three attacks of Hyper Charge.

Offensively: Jayce has a great variety of abilities at his disposal. Judicious use of different combinations grants him excellent flexibility, able to adjust for most situations.

• If you are in your Mercury Hammer form and need to quickly relocate, you can use your transform into the Mercury Cannon, giving you extra movement speed thanks to your passive and then immediately placing Acceleration Gate will give you a further significant speed boost.
• Additionally, casting Acceleration Gate, passing through it and then firing Shock Blast back through it will likely deal considerable damage to your pursuer, forcing him back or allowing you to finish him off with Hyper Charge and To The Skies! combo.
• Also, when firing Shock Blast through an Acceleration Gate, the range and damage on the Shock Blast is greatly increased allowing for high poking potential in the laning phase.
• Placing Jayce within the Acceleration Gate and casting Shock Blast won't tip off the enemy of the exact line you'll be firing on as much since the projectile of Shock Blast will be instantly speed up, giving them less time to better react. As well, casting Shock Blast and then placing Acceleration Gate in its path can allow it to hit an enemy that wrongly assumes they can out-run the ability.
• Hyper Charge's Attack damage and attack speed boost can affect attacks dealt by the hammer. Combine this with the magic damage from the switch and the leap from To The Skies! and finish with Thundering Blow to deal a quick and powerful combo.
• The magic damage from the switch also affects structures. Combined with the huge attack speed boost from his Hyper Charge, this can also take down towers very quickly.
• While in lane if against a melee champion, be sure to continually harass them while in your Mercury Cannon form, this will deny their minion kills and help give you more lane control. Doing this will inadvertently push up your lane so stay at a distance once you've pushed up to a tower in order to allow for an easy escape from a gank.
• If you know your enemy laner is not present, switch to your Mercury Hammer and restore mana.

Defensively: Jayce can escape from many situation like:

• If you are being poked under your tower, quickly casting To The Skies! on a group of minions will clear them and damage your opponent. While they are slowed, you can use Thundering Blow to knock them back into tower range for a potential surprise kill.
• If jungling and a tower is being pushed, you can combo Acceleration Gate and Shock Blast to quickly clear a group of minions and then Thundering Blow the enemy champion into the tower and finish with To The Skies!.

Jayce is a good champion in team fights:
Offensively: Jayce has a team fight strategy that can help his team winning the fight without even going into a real one, you just need to do the following:

Defensively: Jayce can help his teammates to escape fights if they are low in health by using his Acceleration Gate for the movement speed in Mercury Cannon Form. Also he can use his To The Skies! to slow the enemy or his Thundering Blow to push them away from his allies in Mercury Hammer Form.

• Changing forms introduces an entirely new set of abilities that do not share the same cooldown timer with the other set of abilities. Changing forms twice will not cause an ability to go off cooldown any sooner.
• Hyper Charge can be used to destroy enemy Wards before they dissapear after they are placed.
• Shock Blast's explosion can reveal the Fog of War and grant vision in brush for a small period.
• Thundering Blow has the capability to knock enemies over thin walls.
• Lightning Field can be very useful when trying to destroy minion waves and jungle camps.
• Lightning Field's passive allows easy mana recovery.
• When in Hammer Stance, To The Skies! makes an excellent gap closer, and grants the opportunity to unload deadly ability combinations.
• It is to be kept in mind that Jayce's Mercury Cannon has a much faster attack animation than his Mercury Hammer. This makes last hitting minions much easier to accomplish while ranged rather than as melee.
• Even though Thundering Blow does not scale off a target's missing health, it can be used as an execute-style ability. Keep your eye on the opponent's health and cast Thundering Blow when they have reached the same % of their health as it will deal for a safe kill.
• Acceleration Gate reveals fog of war at either end of the gate, use this to help set up jumps on minion camps in the jungle.

• If your opponent is ahead of you in farm and pushing his lane you have 2 ways to keep up either by:
  1- Go to your jungle and have a bit of creeps with more gold and more experience till your opponent push to your tower then you go and farm the under tower creeps and protect your turret from being destroyed also this way is good for an easy gank by your jungler.
  2- Or you can use your Acceleration Gate & Shock Blast in the Mercury Cannon form to an easy farm and less pushing of lane.

• If you killed your opponent and you have a good ward coverage and want to farm the lane so quickly without missing creeps and to destroy the turret so fast before your opponent get back to lane:
  use your To The Skies! & Lightning Field in the Mercury Hammer Form to farm as u will not lose mana and farm fast and then change to Mercury Cannon Form and keep using Hyper Charge on turret about approximately 15 second or less with good cooldown on Hyper Charge the turret will be destroyed easily.

Jayce has a mana problem at (early/mid/late) game so i recommend to buy Tear of the Goddess early game then buy Manamune and try to use your skills to complete it into Muramana to give you the mana you need in fight and for mana regeneration also change to Mercury Hammer to give your basic attack mana regeneration.

Jayce has lots of skill shots so i recommend not to take the the Acceleration Gate & Shock Blast if you are not sure it will hit the target as you are wasting your mana this way. Try to practice you shots before you play him to perfect it.

Armed with wit, charm, and his signature transforming hammer, Jayce lives to protect his native Piltover. Long before his nation called him a hero, however, he was a promising young inventor. When Piltover commissioned him to study a rare arcane crystal, Jayce discovered it could be used as a vast energy source. Eager to make a name for himself, he began developing a device to harness its power. Word of the crystal's potential reached beyond the borders of Piltover. Viktor, the machine-augmented scientist from Zaun, brought Jayce an offer – together, they could use the crystal to advance his "glorious evolution," a vision of humanity fused with technology. Jayce refused, but the Zaunite had no intention of leaving empty handed. He effortlessly blasted Jayce aside and seized the crystal, incinerating the lab's meager security force as he left for Zaun. Jayce implored the Piltover government to respond, but the officials refused to support an act of aggression. He decided to act alone, realizing that if no one struck back, Piltover would never be safe.

Jayce returned to the lab to prepare for his attack. After intense research, development, and hands-on testing, he emerged with his crowning achievement –the Mercury Hammer. Weapon in hand, Jayce marched to Zaun and began his one-man assault. Viktor's acolytes rushed to stop him, but Jayce smashed them aside, fighting his way into the heart of the lab. Inside, Jayce saw the horrifying brilliance of Viktor's creations, all powered by the energy of the arcane crystal. He realized that his only option was to destroy the power source, but Viktor stood in his way. Though their clash left both scientists heavily wounded, Jayce managed a desperate strike at the crystal. He shattered it and escaped as Viktor's machines erupted in flames. When he returned home, exhausted but victorious, the citizens of Piltover hailed Jayce as a hero. He reveled in the adoration, but knew that his actions had drawn the attention of dangerous enemies. Now devoted to the defense of his people, Jayce is Piltover's best hope for a bright future.

"Trust me: if we're smart, Piltover can stand strong against any threat. Hey, I'm living proof."
― Jayce

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