Raphael, the Muscle is a mythic Legendary Creature — Mutant Ninja Turtle card from Teenage Mutant Ninja Turtles Eternal (TMC), collector number 4. Current market price: $1.59 (foil $0.65), TCGplayer market prices via Scryfall.
Double all damage that creatures you control with counters on them would deal. When Raphael enters, create a Mutagen token. Partner—Character select (You can have two commanders if both have this ability.)