LoL Champion Build Guides: Kai'Sa

Kai'Sa's basic attacks deal 4-10 (at levels 1-16) (+ 1-5 (at levels 1-17) per Plasma stack) (+ 10 / 12.5 / 15 / 17.5 / 20% of ability power (based on Plasma stacks)) bonus magic damage.

Caustic Wounds: Kai'Sa's basic attacks, Void Seeker and nearby allies' immobilizing effects mark enemies with Plasma for 4 seconds, stacking up to 4 times. At 4 Plasma, Kai'Sa's next attack ruptures the target, dealing 15% (+ 2.5% per 100 AP) of target's missing health as bonus magic damage, capped at 400 against monsters.

Living Weapon: When reaching a certain amount of stat from items and base stats, Kai'Sa can evolve the related basic ability. This has a channel time of 2 seconds, and the upgrade is canceled if the said amount of stat isn't reached anymore.