Corki, the Daring Bombardier

Considered one of the scariest and strongest ADC in Leagues of Legends. B4 playing, recommend to use smart-cast spells to perform better. Support recommended by Bliztcrank
Advantages

Super Crazy passive (10 % true damage)

Strong ability of harassing

Great escaping and going toward skills

Strong in early game and do well in mid and late

Great explosive force

Can do many skills at once

Disadvantages

No CC

Super low health for ADC

Low base movement and attack speed

Usually needs to rely on teammates, standing at bad position will usually get caught

This is my runes~
I used Greater Mark of Attack Damage to increase my ad and early game farming ability. However, if you think you are pretty good at last hit, I strongly suggested to buy Greater Mark of Armor Penetration, since many skills of Corki is Magic Damage.
At least 2 Greater Glyph of Mana Regeneration is suggested to put on Corki, since many of his skills required mana a lot. Of course, it is still up to you

Masteries

Ignite and Flash is mostly suggested by all people



Works well for enemy who is running away, however, many people do not recommend to use ignite at level 1 since 1 potion can have the losing health back.


Always take flash on ADC for both escape and offense function


Could be recommended when you feels like that you really need some CC

Others
Some people might be thinking about using heal , but it got nerfed, and it doesn't work very good now. So I don't suggest that

Corki's skills are very good I like maxing E first since E have armor penetration with physical damage. Q deal magic damage very strong in early game, but however, it need a lot of many and short range.
Hextech Shrapnel Shells

Corki's auto-attacks deal 10% of attack damage, as additional true damage to minions, monsters, and champions\

Phosphorus Bomb

RANGE: 600 COOLDOWN: 8 COST: 80 / 90 / 100 / 110 / 120 Mana
MAGIC DAMAGE: 80 / 130 / 180 / 230 / 280 (+ 50% AP)
ACTIVE: Corki detonates a bomb to reveal the target 250-radius area for 6 seconds. Enemies hit take magic damage and are also revealed for 6 seconds.

Missile Barrage

RANGE: 122 5COOLDOWN: 1.2COST: 30 / 35 / 40 Mana

Valkyrie

RANGE: 800 COOLDOWN: 26 / 23 / 20 / 17 / 14 COST: 100 Mana
MAGIC DAMAGE: 30 / 45 / 60 / 75 / 90 (+ 20% AP)
MAXIMUM DAMAGE: 150 / 225 / 300 / 375 / 450 (+ 100% AP)
ACTIVE: Corki surges to target location with 650 speed, bombarding the ground he soars over and leaving a trail of up to 3 blazing patches of ground that last 2 seconds each. Enemies hit by the bomb take magic damage, and continue to take damage every 0.5 seconds while they remain inside the fire, for a maximum of 5 ticks of damage from Valkyrie.


Gatling Gun

RANGE: 600 COOLDOWN: 16 COST: 60 / 65 / 70 / 75 / 80 Mana
PHYSICAL DAMAGE: 10 / 16 / 22 / 28 / 34 (+ 20% bonus AD)
MAXIMUM DAMAGE: 80 / 128 / 176 / 224 / 272 (+ 160% bonus AD)
ARMOR REDUCTION: 1 / 2 / 3 / 4 / 5
MAXIMUM REDUCTION: 8 / 16 / 24 / 32 / 40
ACTIVE: Corki activates his gatling gun, spraying bullets in a ??° cone in front of him for 4 seconds. Enemies in the cone on Gatling Gun's activation take physical damage and have their armor reduced, and continue to suffer these effects every 0.5 seconds while they remain in the gunfire, for a maximum of 8 ticks of damage/armor reduction from Gatling Gun. The armor reduction stacks and lasts 2 seconds. Corki can move, attack, and use other abilities during Gatling Gun's effect.

Missile Barrage

RANGE: 1225COOLDOWN: 1.2COST: 30 / 35 / 40 Mana
MAGIC DAMAGE: 120 / 190 / 260 (+ 30% AP) (+ 20% AD)
MISSILE RELOAD TIME: 12 / 10 / 8
BIG ONE MAGIC DAMAGE: 180 / 285 / 390 (+ 45% AP) (+ 30% AD)
ACTIVE: Corki fires a missile in a line, damaging enemies within 75 range upon impacting an enemy.
Corki can only fire a missile if he has missiles stored, and can store up to 7 missiles. Corki gains one missile every few seconds. This reload time is reduced by cooldown reduction and does not progress while having maximum missiles. After dying, Corki will respawn with 4 missiles.
MAGIC DAMAGE: 120 / 190 / 260 (+ 30% AP) (+ 20% AD)
MISSILE RELOAD TIME: 12 / 10 / 8
Every third missile fired will be marked as a Big One, dealing 50% more damage within 150 range.

Early Game
In early game, you will try hard to harass the other team's adc since you are very good in early game. Remember that don't play to rush but cruel. As long as you get a few kills and a okay farm number you are doing alright.

Mid Game
Corki should have now at least Bloodthirster, Zeal, b.f. sword], [[boots. Later on follow the build and you will do good at late game. Never travel alone unless you know where the enemy is. Some people might said to build Trinity Force, I said that's pretty good, but that's not my style, and never ever ever build Trinity Force from the start or the enemy will make you suffer.

Late Game
While in teamfights in late game, make sure you stand in a good position. Strongly suggest to use smart cast. You true damage passsive, Gatling gun, and Missile Barrage will give you a great lift to victory which you could cast it all in one time. Just remember, a good position. Try not to die even to trade kills, because you are the most important player in your team.

Her ultimate is absolutely terrible, can escape is the best. Ashe's Volley, standing behind the minions will be able to effectively avoid the arrows, Early game Ashe has thin blood, phosphorous bomb, Gatling Gun, Missile Barrage could caused her considerable degree of consumption of blood.

Miss fortunes's early output is quite hurt. Especially Make it Rain, try to stay away from that, and MF's mana is easy over run, so try to notice that. Use Valkyrie to stay away from Bullet Time

Caityln's range is very long. You will probably get poke by her hard in early game. Watch out for Yordle Snap Trap in the bushes. You should win her in tough fights by your burst damage. If you can't run against her Piltover Peacemaker, at least stay behind minions for less damage. If you try to chase her which she uses 90 Caliber Net, don't be wondering what should I do but use your Valkyrie.

Almost the weakest early game adc but the strongest late game adc. Generally you counter her, and tried to melt her early game. If you lost her at early game ... XD Just harass her hard, normally, she's nothing against you at early game.

You are more scarier that Ezreal. You just have to stay behind minions and use Ur Q to poke. Watch out for Trueshot Barrage and use Valkyrie to escape. Mystic Shot cant pass through minions and if Ezreal kept using Essence Flux to poke, you can laugh and wait for he ran out of mana, unless it Mr. Bebe Blue Ez XD

One of your deathiest enemy. Like Vayne, bad early game but strong late game. One advice is that punish him early game or he will make you suffer at late game.

Like Vayne and Kog'Maw, late game champ. Her range grows each level up. You counter her. So harass her "hard" early game. Use Q to make her suffer. If you lost her at early game... XD Pray hard someone go afk

Tough champ. Depend on your skills really. Nth special to mention against him

Harass him early. Buy pink wards or oracle if you need to

I will make it fast. Best with Bliztcrank and Leonna. Thresh, Taric could be