Garth, The Death Head

{2}, Exile two cards from a single graveyard: For
each of the exiled cards' types do the following—
•Land or creature: Create a 2/2 black zombie
creature token.
•Instant or sorcery: Put a -1/-1 counter on target creature.
•Enchantment or artifact: Put a +1/+1 counter
on target creature
{bull}Planeswalker or tribal: Proliferate.