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Jayce Build Guide by desch3445

Top S12! Delete Squishies & Take Names with Jayce

Top S12! Delete Squishies & Take Names with Jayce

Updated on April 16, 2022
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League of Legends Build Guide Author desch3445 Build Guide By desch3445 162 21 365,569 Views 18 Comments
162 21 365,569 Views 18 Comments League of Legends Build Guide Author desch3445 Jayce Build Guide By desch3445 Updated on April 16, 2022
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Choose Champion Build:

  • LoL Champion: Jayce
    Midlane (Better in every way possible)
  • LoL Champion: Jayce
    Toplane (Ugh, if you MUST know)

Runes: First Strike Page

1 2 3 4 5
First Strike
Magical Footwear
Biscuit Delivery
Cosmic Insight

Gathering Storm

+9 Adaptive (5.4 AD or 9 AP)
+9 Adaptive (5.4 AD or 9 AP)
+8 Magic Resist


1 2
LoL Summoner Spell: Flash


LoL Summoner Spell: Ignite


Threats & Synergies

Threats Synergies
Extreme Major Even Minor Tiny
Show All
None Low Ok Strong Ideal
Extreme Threats
Ideal Synergies
Ideal Strong Ok Low None

Champion Build Guide

S12! Delete Squishies & Take Names with Jayce

By desch3445
So you want to main Jayce?
What a coincidence, I main Jayce! Jayce is an absolutely phenomenal jack-of-all-trades, and he's been my main for 2 seasons now. The feeling of executing a perfect 11 input all-in combo and deleting someone off the face of Summoner's Rift is beautiful and perfect and amazing and I love Jayce so much he's my precious baby <33333~

Ahem, where was I?

Jayce has rune & build variety up the wazoo, range that would make a Caitlyn player cry and brown their daipy, and snowball potential potential that has Katarina players across the face of Summoner's Rift malding and typing racial slurs with more APM than a Korean Starcraft 2 player. There is just so many different playstyles all in one neat bundle in this champ, and that's why I love him when he's cancerbroken and when he's absolute dogwater, Jayce is my true love, and if you like champs that can just do it all, then Jayce is your man.

Do be aware though, he is incredibly difficult (Not quite Aurelion Sol or Azir difficult, but still pretty hard), so don't be too mad if you get stomped for like your first 20 games on this champ. If you stick with him and really learn what he can do, you'll have the time of your life, I promise.
That's good and dandy, but what does he accomplish in a team, exactly?
Jayce can poke out melee champions AND ranged champions with good use of his cannon form, while also functioning as an assassin in his melee form at ALL stages of the game. The raw amount of AD scalings and utility in his kit can feel absolutely unfair to play against.

Often times, a good Jayce can be seen sniping ADCs for 60% of their health bar from across the map, and 1-shotting poor, poor midlaners that dare to facecheck a bush. It's the funniest thing to watch them scream and whine like babies in /all chat not knowing you're playing a C tier champion.
Jayce consumes mana faster than Riot deleting the Chronoshift Project (Seriously, what the hell), it's his big weakness that prevents him from being absolutely broken. You need, need, NEED to manage your mana properly. Don't go ham with your abilities, know exactly when you need to use them, and if its even worth it to use them. I promise you, you're going to run out of mana frequently in the early game. He's also restricted to assassin items & some bruiser items, which kinda sucks.

Jayce also has some pretty mediocre waveclear compared to other Midlaners. Sure, you could spam accelerated Shockblast on the wave, but remember that bit about mana? It's best to wait to shove/roam until you've got Dirk + Tear, so you've got the damage AND the mana to expend on it.

Jayce also gets absolutely dogged on by Tanks, he has somewhere around a 30% winrate vs Nasus, Ornn, Maokai, etc. He just doesn't have the raw early damage to deal with them before they get their resists, and you can really only start to build armpen around 3rd-4th item, as you're going to NEED your Eclipse & Manamune as early as possible. This is the reason many Jayce mains prefer going Midlane as opposed to Toplane, 'cause there's MUCH less of a chance to see Tanks go there. If by chance, you do come across a tank mid, God save your soul.
Cool Jayce Quirks!
Both of Jayce's Q is AoE, so if you Q a minion an enemy champion is standing next to, it'll hit them for the full damage & slow!

Jayce's Shockblast can be buffered, which means you can cast other abilities during its animation, which means rather than placing your acceleration gate first, and then shooting your shockblast through it, Q and then E directly in front of you for an incredibly fast empowered shockblast! Also, much like Urgot's E - Flash, you can Q - Flash for an almost impossible to react to projectile, and if you're fast enough, empower it with your gate!

Hypercharge is an auto-attack reset, so you can AA - W - AA - AA - AA for an incredibly fast 4 auto combo! Also, your W does not end if you switch forms, so you can get 3 very fast melee autos, which is useful if you're running Conqueror, or taking early tower plates!

In melee form, if you input an auto-attack command while in range and then quickly knock the target back, your E animation will go through first, and your auto will follow them well outside your actual auto attack range.

Buffering Q and placing the gate second can feel very janky at first, but if you place your cursor over where you want to shoot, start the shockblast, quickly sling your mouse back in front of you, and then place your gate, you will become MUCH more accurate.

Both Shockblast & Acceleration Gate grant vision where they land. If you shockblast a jungle monster, or place an Acceleration Gate over it, you can switch to melee form and leap onto it, effectively creating a wall hop! Try it when you're running away in a lane, or chasing someone into the jungle!

Your melee Q animation can be cancelled by any emote (Laugh, taunt, dance, etc). Not in the sense that it saves any time, rather think of Zac's jump sometimes being a very fast walk. Using this, Jayce's Q animation can seem much less obvious to the enemy, and can possibly give you the edge.

Jayce has a combo specific to the rune Hextech Flashtraption. If you melee Q while channeling Hexflash, the channel is canceled. Unlike the animation cancel with the laugh emote, the channel cancel allows you to use other abilities in the middle of your Q cast, meaning you can start your E cast while you Q. Chain this with the AA input "ranged melee" mechanic, and that's your entire melee rotation. The kicker is, if done correct, this combo effectively outputs your entire melee rotation in 0.04s; Even though at lvl 4 with just a longsword it does around 300 dmg, according to a training mode dummy, the combo will read as somewhere around 6300 DPS.
Do keep in mind though, Hexflash can only be used out of combat, so it's best to be used out of a brush.
The full combo, Hexflash-Q E AA, is called a Hextap, and there's basically no counterplay to it.
(I included this here rather than the "Combos combos combos" section because of the unique inclusion of Hexflash, and how deep into explaination I went.)
Combos Combos Combos
(M) is for starting in melee, (R) for ranged.

(R)- QE
Fire an accelerated shockblast!

Fire 4 lightning speed autos!

(M)- Q W AA E
A quick burst of damage, followed by a knockback for safety!

The standard all-in combo. A burst engage, followed by W for the auto reset to proc the cannon passive, shredding resists for the accelerated shockblast and final remaining 2 Hypercharge autos.

Technically this combo is more efficient, with the cannon passive auto starting off, therefore making the entire combo more efficient, but it leaves you off in melee form which isn't the greatest for any sort of followup. Use ONLY if you're in a bush waiting for a squishy.

(R)- Q E R Flash AA
This one requires much more APM than the other ones. While it doesn't do more raw damage, it is by far the fastest and hardest to react to burst combo.

(R)- Q Flash E
Q buffering also allows for summoner spells such as flash. You can start the Q animation, flash, and then bring up the gate for a surprise shockblast that is much closer than the enemy could've anticipated. Also, a variation if this is by far Jayce's hardest mechanic, the Arcflash. The Arcflash requires you to start the Q animation, flash to the side, and bring the gate up in front of you. While that might not sound hard, it requires you to have a perfectly offset aim, and move your mouse incredibly fast and accurate.
All About ME!!
This is objectively the best chapter, because I'm the greatest, I love me, I'd probably do me, but that requires someone out there to be exactly like me, which there isn't, because I'm too unique and amazing.

I'm 800k mastery Jayce, and I love all things Jayce, you can bet I died screaming when I heard Jayce was gonna be in Arcane (I thought it was sad that they didn't make him an absolute narcissist/douchebag like he is in lore, but that's alright).

I'm on Twitter and Twitch, please follow me on either, I crave attention and if you give me it I will love you forever.

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