Aishling, Betrayal Forcer

+3: Zombies get +1/+1 and are Infected (Creatures killed by an Infected creature are returned under the Infected creature's owner's control)
-3: Discard the top three cards of a library. If one of the cards discarded this was was a creature, it enters the battlefield under your control.
-10: Return all creatures from one graveyard to the battlefield under your control as black zombies. Exile all creatures from another graveyard.