Apostle's Blessing is a common Instant card from Modern Masters 2015 (MM2), collector number 8. Current market price: $0.31 (foil $0.81), 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.