Skull Skaab is a uncommon Creature — Zombie card from Innistrad: Double Feature (DBL), collector number 515. Current market price: $0.17 (foil $0.39), TCGplayer market prices via Scryfall.
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.