Sanguine Savior is a common Creature — Vampire Cleric card from Murders at Karlov Manor (MKM), collector number 230. Current market price: $0.14 (foil $0.10), TCGplayer market prices via Scryfall.
Flying, lifelink Disguise {W/B}{W/B} (You may cast this card face down for {3} as a 2/2 creature with ward {2}. Turn it face up any time for its disguise cost.) When this creature is turned face up, another target creature you control gains lifelink until end of turn.