Kerrigan, Queen of Blades

First strike
Eminence: if Kerrigan, Queen of blades is on the battlefield or in the command zone, zerg creatures cost{1} less to cast
When Kerrigan, Queen of Blades enters the battlefield, put a +1/+1 counter on all zerg creatures you control
{b/r}{g}{t}: Search your library for up to two Zerg Creature cards with power 2 or less and put them into your hand. Shuffle your library afterwards