Kang the Conqueror is a mythic Legendary Creature — Human Villain card from Marvel Super Heroes (MSH), collector number 403. Current market price: $1.77 (foil $1.73), TCGplayer market prices via Scryfall.
Flying Power-up — {5}{U}{U}{U}: Put a +1/+1 counter on Kang. Take an extra turn after this one. During that turn, power-up abilities can't be activated. (Activate each power-up ability only once. Reduce the cost by his mana cost if he entered this turn.)