Stegron the Dinosaur Man is a common Legendary Creature — Dinosaur Villain card from Marvel Super Heroes Commander (MSC), collector number 810. Current market price: $0.22 (foil $0.21), TCGplayer market prices via Scryfall.
Menace (This creature can't be blocked except by two or more creatures.) Dinosaur Formula — {1}{R}, Discard this card: Until end of turn, target creature you control gets +3/+1 and becomes a Dinosaur in addition to its other types.