Dark Withering is a uncommon Instant card from Dominaria Remastered (DMR), collector number 79. Current market price: $0.24 (foil $0.29), TCGplayer market prices via Scryfall.
Destroy target nonblack creature. Madness {B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)