Corki
Consider Them Spanked
Lane harassment and consistent damage output.
Precision
Improved attacks and sustained damage
Fleet FootworkAttacking and moving builds Energy stacks. At 100 stacks, your next attack heals you and grants increased
MS .
Absorb LifeKilling a target heals you.
Legend: AlacrityTakedowns on enemies grant permanent Attack Speed.
Coup de GraceDeal more damage to low health enemy champions.
Sorcery
Empowered abilities and resource manipulation
Manaflow BandHitting an enemy champion with an ability permanently increases your maximum mana by 25, up to 250 mana.
After reaching 250 bonus mana, restore 1% of your missing mana every 5 seconds.
Gathering StormGain increasing amounts of AD or AP,
adaptive over the course of the game.
Adaptive Force
+9
Adaptive Force Adaptive Force
+9
Adaptive Force 
Health Scaling
+10-180 Health (based on level)
Why Fleet Footwork
Fleet Footwork provides both great lane sustain as well as well as the movement speed needed to position for follow-up damage.
Why Absorb Life
Overheal grants you a bit of buffer room when taking trades in lane to help you come out ahead.
Why Legend: Alacrity
More Attack Speed means more damage,. Corki's unique passive means that the more he is able to auto the harder it is to itemize against him thanks to his split damage.
Why Coup de Grace
Corki can be one of the *burstiest* champions in the game thanks to his strong Sheen procs. Coup De Grace lets empower that burst even further on squishy targets.
WhyManaflow Band
The additional mana sustain from Manaflow Band can greatly empower your ability to take sporadic lane trades and harassment.
WhyGathering Storm
Gathering Storm makes Corki one of the strongest late game carries in the game thanks to his hybrid damage profile and consistent damage output.