Apostle's Blessing is a common Instant card from New Phyrexia (NPH), collector number 2. Current market price: $0.29 (foil $4.53), TCGplayer market prices via Scryfall.
({W/P} can be paid with either {W} or 2 life.) Target artifact or creature you control gains protection from artifacts or from the color of your choice until end of turn.