Skull Skaab is a uncommon Creature — Zombie card from Innistrad: Crimson Vow (VOW), collector number 248. Current market price: $0.23 (foil $0.34), 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.