Hulkling, Young Avenger is a rare Legendary Creature — Kree Skrull Hero card from Marvel Super Heroes Commander (MSC), collector number 689. Current market price: $0.27 (foil $1.81), TCGplayer market prices via Scryfall.
Flying Whenever you cast a noncreature spell, Hulkling becomes a copy of up to one other target creature until end of turn, except his name is Hulkling, Young Avenger, he's 4/4, and he has flying and this ability.