Build Guide by vizion
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Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
Ok I hope everyone is ready for this, as I am about to describe in depth exactly how to dominate every game as Corki. The point of this guide is that a lot of people have trouble playing corki (and I did too for a long time), and he is often considered underpowered or too difficult to be a great champ. Well, I eat those people for breakfast, the way I play corki makes children QQ and hardened veterans scream OP. I'm putting this guide out there so that others can wreck face with this mighty mighty champion, to the point where he will need to be nerfed.
Runes / Masteries
Marks - Attack speed.
If you believe in nothing but armor pen in marks, DONT STOP READING. Armor pen is very very good, but it cannot go negative. When you are playing corki there will be no armor to penetrate, so you do not need the pen and can take other offensive runes. The other option here might be crit chance but the attack speed helps you to farm and push much more easily, especially since you get very little attack speed from items.
Seals - Mp/5/Level (Or - Dodge)
I used to use dodge here but I've found that the mana is going to help you throughout the game to farm, harass, etc... you can go with dodge and they will be very beneficial, but you will be even more dependent on golem than you already are.
Glyphs - MR/Level
Corki needs the survivability and doesnt have much room for items with magic resist on them, these are crucial, especially because he does not get much benefit from other good glyphs such as AP or Cooldown.
Quints - Flat HP
I'm really not going to even argue this one, its early survivability, there is no other option.
Masteries - 0/9/21 or 3/6/21
6 Magic Resist, 2 armor, 2 dodge, 1 Dodge +speed. Even just the MR makes taking defense worth it.
Improved Summoner Spells, SS CDR, CDR, Movespeed, Mana, regen, JUNGLE BUFFS, and exp. Utility is a must have.
The other option is to max the armor and the crit chance rather than the dodge masteries, if I am doing a pub I will often take that but if you are using dodge runes or if you know a teammate will be building starks it is better to go 0/9/21.
Only other mastery setup I would be willing to run would be 0/16/14 to also get the +60 starting hp and still get the jungle buffs and mana/second.
Great spell, corki is ALL ABOUT the minion kills early, and is a good pusher later, so it is pretty crucial to be able to stay in lane as much as possible, also lets you maintain your jungle control better and works well with wards.
Currently the best escape spell in the game, particularly when you already have a way to jump obstacles. Can also be used to ensure Gattling Gun damage
Used to be good but doesnt get rid of blinds now so its kinda useless
An ok escape tool but is higher CD and shorter effect than ghost
Gives him a slow when he doesnt have Lizard
Starting: Cloth Armor + 2 hp pots + 2 Mana pots
Boots of Speed
Vamp Scepter -> Starks Fervor
Zeal -> Phantom Dancer
Phage -> Frozen Mallet
This is my item build... if you don't believe it works, you can go on failing as corki, but with this build, if you arent legendary then it is probably because minions haven't spawned yet.
-As far as starting with the cloth armor, corki is very squishy early game but desperately needs to be able to farm, with 400 hp of healing and 200 mana, along with 41 starting armor he can lane exceptionally well and farm to his heart's delight. On your first trip back, try to grab the Razor and the Vamp scepter, and if you have the money wriggle's or the boots.
-Madred's Razor gives corki some early damage, and further builds the armor, and it also lets him farm even faster and grab jungle buffs. With lifesteal as well he can lane indefinetely, because every auto attack has a 15/20% chance of dealing 500 extra damage (~75 extra lifesteal). That combination is huge. Wriggle's lanturn is the PERFECT starting item for corki, in addition to the huge armor amount (enough to put him over 110), the farming ability, the amazing active (free 90 gold every 3 minutes, and a permenant ward slot), it is also the only lifesteal item that is worth getting as an early game item on corki. Bloodthirster costs FAR too much to get early game on corki, executioner's doesnt give any damage, starks is great but WAY too much money to be an item that doesnt give damage, and cutlass is just stains. (Malady of course is where stains go to use the bathroom) For about the cost of a BF sword (that you can get earlier than a bf sword because it is combined by pieces) you are getting 15 less attack damage in exchange for armor, lifesteal, farming/jungling ability, and free wards.
-Now, onto some damage... our first BF sword item is going to be Blackcleaver because it is cheap and the way that it synergyzes with Gattling Gun (as explained later) After that Infinity edge, because while it is expensive it is the item that will increase your auto-attack damage more than anything else.
-After you've gotten your damage up (292 AD) you can start getting a little bit of attack speed and more lifesteal (14% is great early but not enough for late game) so we of course go for starks (also because it stacks with BC and GG). Phantom dancer is the other attack speed option but it is only worth getting under TWO conditions. ONE - that someone else on the team has it and TWO - that that other person is with you during every teamfight and generally stays alive during them. The point is that it can be worth getting a second starks because the attack speed and lifesteal will stack, but the most powerful ability (the armor reduction) will not apply to enemies twice. If you can count on someone else to do that then your best attack speed item will be phantom dancer, getting the zeal first then coming back to finish it after phage.
-As a final item, phage -> Frozen mallet is an hp boost, is more damage, and is a slow (incase you don't have lizard or teammates). Hp at this point in the game will be useful to round out your defenses more than buying armor/MR is, because you already will have about 110/95 armor/MR.
9. Q or E
10. E or Q
Q- Phosporus Bomb
GREAT skill, large aoe, great damage, blind chance, and utility all in one. It is your primary skill for harassing and can help you to farm, it also puts out good dps during early teamfights, and even does noticable chunks at the end of the game. If you are using it to detect stealth, pop behind you when your team is pushing if they have a twitch, put in in shaco's escape path, put it around low hp people if they have eve, and of course spray that **** all over akali's little shroud. It is just about the perfect size to make that skill useless for her. It can also be used to check bushes or dragon/baron if you need to, and can be used to check those places for wards (then kill them). Finally it lets you farm your heart out on teemo shrooms if you are ever lucky enough to be matched against one. When using this in lane, try to use it on the backrow creeps when the enemy champ gets close enough to be hit by it, or as a supplement to your auto attack for last hit timings.
tl;dr level this first, you need the damage
E - (yeah I'll come back to W) Gattling Gun
This is your late-game game winner. Every half second, you do half of your total attack damage to everyone in front of you and lower their armor by 5. By level 5 of the skill, you do this for 5 seconds (10 times, aka 5x your attack damage in AoE and 50 armor REDUCTION). This skill is how you kill people, and is great for taking jungle buffs. It is not, i repeat, IT IS NOT a farming/harassing skill early game. It's effect is really only compounded if you can hit multiple times and get the armor lowering to stack up... leveling and using it in lane is just far too expensive, that is what phosphorus is for. One very important thing about GG and corki is that corki CANNOT deal huge damage while kiting... that is what ashe is for. Corki is more like twitch in that he completely destroys anything in front of him, but does no damage whatsoever when running away. This means that positiioning yourself behind your team is very key, and the survivability plays a huge role in your ability to put out damage. This skill is also why we stack damage (because it gets no scaling besides your attack damage) and why BC/starks are so good... with GG+BC+starks you can be lowering an enemy armor by 130. And YES, that can take them negative (meaning you will start dealing +% damage on every attack or gattling gun hit). This is also the reason why no corki EVER should buy last whisper EVER EVER EVER. LW penetrates 40% of the armor that they have above 0. If they are below 0, it does nothing. If they have 10 armor, it is doing less than an armor pen rune... In general, unless the ENTIRE other team has more than 160, starks fervor will lower their armor by more than last whisper does. Let me explain using a metaphor... your terribad corki goes into a bar (enemy champ) and thinks that he's going to find some ladies (armor). This is a pretty standard bar so it has 80 single women (armor) Then, my corki comes into the bar and shows off his good looks (gattling gun) and tells some amazing jokes (blackcleaver). He does so amazingly that he leaves with 110 women, all 80 of the single ones and 30 that used to have boyfriends. So now your corki stands up on the table and starts yelling that he is going to penetrate 40% of the women in the bar, but the bar doesnt have any women, just 30 really pissed off dudes that drag him in the alley and beat the **** out of him just as my corki pulls away with his ferrari (starks fervor) that attracted 20 more girls while he was inside. /textblock.
tl;dr, don't gattling early, watch your positioning, use if for kills and jungling.
W - Valkarie
Hey its a great escape skill! Nothing much to be said about this, it isnt worth trying to use it for damage ever, just use it when you need to escape, or if you are ganking and KNOW you won't need it to get away, you can use it to close the gap and keep them in gattlinggun range. Early game, try to not have to use this ever because it is a huge amount of mana better spent on other things.
R - MISSLES YO
Very very nice skill, especially with the recent buff, you will use these in ways that are very similar to your phosphorus... for farming, harassing, and putting out some extra AOE damage in teamfights/ganks. ON FARMING WITH MISSLES: Farming with missles becomes a very important part of corki's life after level 6... one of the first tricks to learn is that a phosphorus plus one small missle is enough to kill the backrow creeps (and deal the damage to any enemy champ near there as well) When you have a BIG ONE ready, it does a lot of damage, so it can be worth saving it for when you know you will hit the enemy champ, either through normal harssing or while he is near his creeps. As a judge of AoE, the big one has about the same AoE as phosphorus. The other use for the big ones is that phosphorus + a big one missle will kill the entire wraith camp THROUGH THE WALL, meaning that after you madred's down the front row and phosph to kill the back ones, you can run over to the ENEMY wraith camp and kill it instantly, without leaving the lane. You can do the same thing to your wraith camp if you are somehow pushed back, but you should be a lot more free to leave the lane and take your camp normally (phosphorus + a couple auto attacks and/or a small missle)
With phosphorus, missles, and madred's procs, you will outfarm and outpush most mids, leaving you open to constantly grab the jungle creeps while still getting full solo exp. Golem is very important on corki because it lets you spam Q and E like mad, and lizard is equally important because it ensures that people cannot leave your gattling gun. As a general rule, golem is more important when laning or pushing, liz is more important when ganking or teamfighting. Grabbing a golem when you just have madred's/scepter or when you have wriggles is quite quick (fast enough you can get back to lane without losing any exp or tower damage). What I will often do is push the creeps to their tower, run off to take golem or lizard, blue pill to buy, then teleport behind to the ward in river behind them. (With wriggles, you are constantly able to keep a ward in the bushes by mid lane, so you are safe from ganks, it is also useful when pushing towers alone because you can set it up to warn you if anyone will be coming)
In general, farm like crazy getting solo lane + jungling exp and gold, push down mid tower like it was nothing, and lay down some vicious ganks, then late game carry team as you lay out three massive aoe damage skills in addition to your auto attack.
Final thoughts - Corki is amazing and there is nothing like him, he does impossible amounts of damage, and actually isn't as hard as some people think, but the biggest thing about corki is that he is a drain on the team. He WILL take the mid lane, he WILL take ALL of the minion kills (and any champ kills available), he WILL want golem buff and lizard buff, and he WILL depend on the rest of the team to stun the enemies and lock down their biggest threats. This doesn't mean that he isn't a good soloqueue/pubstomp character, it just means that you need to pay attention to team comp and let people know what your needs are.
Get out there and destroy - I will be waiting in the Champion Feedback thread to see the QQ's popping up.