Infernal Caretaker is a common Creature — Human Cleric card from Legions (LGN), collector number 76. Current market price: $0.18 (foil $0.53), TCGplayer market prices via Scryfall.
Morph {3}{B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.) When this creature is turned face up, return all Zombie cards from all graveyards to their owners' hands.