Kai'Sa, Daughter Of The Void

First strike
Attacking creatures you control get +1/0, First strike.
While Kai'Sa attacks you may pay {3}{p/w} to deal 1
damage to target blocking creature.(once per combat.)
{1}{p/w}{p/w}{p/w}:Exile Kai'Sa, return it to the battlefield
at your next upkeep. (When she returns to the battlefield she gains haste until end of turn.)
-Kai'Sa is considered a white permanent.