Darkblast is a uncommon Instant card from Ravnica Remastered (RVR), collector number 454. Current market price: $1.15 (foil $1.74), TCGplayer market prices via Scryfall.
Target creature gets -1/-1 until end of turn. Dredge 3 (If you would draw a card, you may mill three cards instead. If you do, return this card from your graveyard to your hand.)