Damn is a rare Sorcery card from Secret Lair Drop (SLD), collector number 1870. Current market price: $4.74, TCGplayer market prices via Scryfall.
Destroy target creature. A creature destroyed this way can't be regenerated. Overload {2}{W}{W} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")