Tidehollow Sculler is a uncommon Artifact Creature — Zombie card from Modern Masters (MMA), collector number 184. Current market price: $0.37 (foil $0.95), TCGplayer market prices via Scryfall.
When this creature enters, target opponent reveals their hand and you choose a nonland card from it. Exile that card. When this creature leaves the battlefield, return the exiled card to its owner's hand.