Moon-Boy, Dino Rider is a uncommon Legendary Creature — Ape Human card from Marvel Super Heroes Commander (MSC), collector number 563. Current market price: $0.28, TCGplayer market prices via Scryfall.
Dinosaur spells you cast cost {1} less to cast. Whenever Moon-Boy attacks while you control a Dinosaur, Moon-Boy gets +1/+1 until end of turn.