Apostle of Purifying Light is a uncommon Creature — Human Cleric card from Core Set 2020 (M20), collector number 6. Current market price: $0.21 (foil $0.25), TCGplayer market prices via Scryfall.
Protection from black (This creature can't be blocked, targeted, dealt damage, enchanted, or equipped by anything black.) {2}: Exile target card from a graveyard.