Suffocating Fumes is a common Instant card from Ikoria: Lair of Behemoths (IKO), collector number 100. Current market price: $0.26 (foil $0.42), TCGplayer market prices via Scryfall.
Creatures your opponents control get -1/-1 until end of turn. Cycling {2} ({2}, Discard this card: Draw a card.)