Captain Marvel, Earth's Protector is a mythic Legendary Creature — Human Kree Hero card from Marvel Super Heroes (MSH), collector number 11. Current market price: $1.35 (foil $1.57), TCGplayer market prices via Scryfall.
Flash Flying, lifelink Power-up — {5}{W}{W}: Put a +1/+1 counter and an indestructible counter on Captain Marvel. (Activate each power-up ability only once. Reduce the cost by her mana cost if she entered this turn.)