Brave Brawler is a common Creature — Human Warrior Hero card from Marvel Super Heroes (MSH), collector number 8. Current market price: $0.07 (foil $0.19), TCGplayer market prices via Scryfall.
Lifelink Power-up — {4}{W}: Put two +1/+1 counters on this creature. (Activate each power-up ability only once. Reduce the cost by its mana cost if it entered this turn.)