Fallen Cleric is a common Creature — Zombie Cleric card from Onslaught (ONS), collector number 145. Current market price: $0.13 (foil $0.50), TCGplayer market prices via Scryfall.
Protection from Clerics Morph {4}{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.)