Stunning Shot is a uncommon Sorcery card from Marvel Super Heroes Commander (MSC), collector number 610. Current market price: $0.30 (foil $0.38), TCGplayer market prices via Scryfall.
Put two +1/+1 counters on up to one target creature you control. Tap up to one target creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)