Corki

When Heimerdinger and his yordle colleagues migrated to Piltover, they embraced science as a way of life, and they immediately made several groundbreaking contributions to the techmaturgical community. What yordles lack in stature, they make up for with industriousness. Corki, the Daring Bombardier, gained his title by test-piloting one of these contributions - the original design for the Reconnaissance Operations Front-Line Copter, an aerial assault vehicle which has become the backbone of the Bandle City Expeditionary Force (BCEF). Together with his squadron - the Screaming Yipsnakes - Corki soars over Valoran, surveying the landscape and conducting aerial acrobatics for the benefit of onlookers below. Corki is the most renowned of the Screaming Yipsnakes for remaining cool under fire and exhibiting bravery to the point of madness. Before the League, he served several tours of duty, often volunteering for missions that would take him behind enemy lines, either gathering intelligence or delivering messages through hot zones. He thrived on danger, and enjoyed nothing more than a good dogfight in the morning. More than just an ace pilot, Corki also made several modifications to his copter, outfitting it with an arsenal of weapons which some speculate were more for show than functionality. When open hostilities ceased as part of the agreement surrounding the formation of the League, Corki was forced into a retirement, which he felt ''cut the engines and clipped the wings''. He tried to make do with stunt flying and canyon running, but it was never the same without the refreshing smell of gunpowder streaking through the air around him. When Heimerdinger joined the League of Legends, it was no surprise to see Corki follow soon after, eager to test his mettle against the best the world has to offer. He is Corki - death from above!

Phosphorus Bomb - Corki fires a flash bomb at a target location. This attack reveals non-stealthed units around the blast and champions for 6 seconds.

Deals 80/130/180/230/280 (+0.5) magic damage to enemies in a target area. In addition, the blast reveals the area and champions hit by the blast for 6 seconds (does not reveal stealth).

Cost

80/90/100/110/120 Mana

Range

600

Great abillity for revealing area, such as grass etc, lvl it up on lvl 4 and max it last

Valkyrie - Corki surges to target location, dropping bombs that create a trail of destruction for opponents who remain in the fire.

Corki surges to target location, dealing 60/90/120/150/180 (+0.4) magic damage per second to enemies in the fire left along his path.

Cost

100 Mana

Range

800

Great escape ability , you can use it for escaping from ganks, or if you need to back up a little , you can jump over any wall in game so ti is great, if a gankers try to follow you, you leave a flaming trail behind and he gets dmg just walking over it ! so lvl it up on lvl 2 and max it 2nd

Gatling Gun - Corki's gatling gun rapidly fires in a cone in front of him, dealing damage and reducing enemy armor.

Corki's gatling gun fires at all targets in front of him for 4 seconds, dealing 20/32/44/56/68 (+0.4) physical damage and reducing 2/4/6/8/10 armor per second. The armor reduction stacks and lasts 2 seconds.

Cost

60/65/70/75/80 Mana

Range

0

His best ability lv it up on lvl 1 and max it first, it gives him great burst dmg, it shredes oponents armor and hp, i prefer to use full ad runes on him and because of his passive whis gives you bonus in true dmg as 10% off your attack damage 

Missile Barrage - Corki fires a missile toward his target location that explodes on impact, dealing damage to enemies in an area. Corki stores one missile every 12 seconds up to 7 missiles total. Every 4th missile will be a Big One, dealing extra damage.

Corki fires a missile toward his targeted location that will collide with the first enemy it hits. Each missile deals 120/190/260 (+0.2) (+0.3) area magic damage.

Corki stores one missile every 10.0 seconds up to 7 missiles at any given time.

Every 3rd missile will be a Big One, dealing 50% extra damage.

Cost

30/35/40 Mana Cost

Range

1225

Hextech Shrapnel Shells - Corki's basic attacks deal bonus true damage to minions, monsters, and champions.

Corki is a pure ad carry , it means not only you have a great ad dmg but you have + 10 % of it inb true dmg so this is the build i recomend for him

Doran's Blade

+80 Health
+10 Attack Damage

Passive: Basic attacks restore 5 Health on hit.

Boots of Speed

UNIQUE Passive - Enhanced Movement: +25 Movement Speed

Dagger

+12% Attack Speed

Berserker's Greaves

+20% Attack Speed

UNIQUE Passive - Enhanced Movement: +45 Movement Speed

Vampiric Scepter

10 Attack Damage
+10% Life Steal

+

B. F. Sword

+45 Attack Damage

Cloak of Agility

+15% Critical Strike Chance

Pickaxe

+25 Attack Damage

Infinity Edge

+70 Attack Damage
+25% Critical Strike Chance

UNIQUE Passive: Critical strikes deal 250% damage instead of 200%.

The Bloodthirster

+70 Attack Damage
+12% Life Steal

Passive: Grants +1 Attack Damage and +0.2% Life Steal per stack (max +30 Attack Damage and +6% Life Steal). Grants 1 stack per unit kill (max 30 stacks). Half of the stacks are lost upon death.

Blade of the Ruined King

+25 Attack Damage
+40% Attack Speed
+15% Life Steal

UNIQUE Passive: Basic attacks deal 5% of the target's current Health in bonus physical damage (max 60 vs. monsters and minions) on hit.
UNIQUE Active: Deals 15% of target champion's maximum Health (min. 100) as physical damage, heals for the same amount, and steals 30% of the target's Movement Speed for 4 seconds (60 second cooldown).

Phantom Dancer

+50% Attack Speed
+30% Critical Strike Chance
+5% Movement Speed

UNIQUE Passive: Champion can move through units.

Guardian Angel

+50 Armor
+30 Magic Resist

UNIQUE Passive: Upon taking lethal damage, restores 30% of maximum Health and Mana after 4 seconds of stasis (5 minute cooldown).

Like i said it earlier every of this builds are not final you need to change your build according to gamer but as far as i am concern this is a perfect build for Corki but many of you will disagree and it is normal if you think you know a better build email me and i will post it