Terrus the Harvester

Whenever a nontoken creature dies create a 2/2
black Zombie token.
Sacrifice a Zombie, {t}: Return target creature
from a graveyard to the battlefield, it becomes a
Zombie in additon to its other types, if it doesnt
have decayed it gains decayed.
(This creature can't block. When it attacks, sacrifice
it at the end of combat.)
Boomah!