Skull Skaab 
Creature — Zombie
Exploit (When this creature enters, you may sacrifice a creature.) Whenever a creature you control exploits a nontoken creature, create a 2/2 black Zombie creature token.
Legality
standardNOT LEGALpioneerLEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL