Hercules, Olympian Hero is a rare Legendary Creature — Demigod Warrior Hero card from Marvel Super Heroes Commander (MSC), collector number 16. Current market price: $0.30, TCGplayer market prices via Scryfall.
Whenever Hercules attacks, put a +1/+1 counter on him. He gains indestructible until end of turn. Whenever Hercules is dealt damage for the first time each turn, put that many +1/+1 counters on him. (He must survive the damage to get the counters.)