Divine Smite is a uncommon Instant card from Adventures in the Forgotten Realms (AFR), collector number 12. Current market price: $0.18 (foil $0.29), TCGplayer market prices via Scryfall.
Target creature or planeswalker an opponent controls phases out. If that permanent is black, exile it instead. (If it phases out, treat it and anything attached to it as though they don't exist until its controller's next turn.)