Mona, Angel of the Undead

Flying, deathtouch
Creatures can't have indestructable, hexproof or lifelink.
Creatures your opponent cast cost {1} more to
cast, if they share a creature type with a creature
on the battlefield.
If you control two ore more zombies,
other creatures get -1/-1.
Whenever you cast a zombie spell, if you control
three or more zombies, each opponent discards a
card.