Undead Butler is a uncommon Creature — Zombie card from Innistrad: Crimson Vow (VOW), collector number 133. Current market price: $0.38 (foil $0.49), TCGplayer market prices via Scryfall.
When this creature enters, mill three cards. (Put the top three cards of your library into your graveyard.) When this creature dies, you may exile it. When you do, return target creature card from your graveyard to your hand.