Alex Wilder, Runaway is a uncommon Legendary Creature — Human Hero Villain card from Marvel Super Heroes Commander (MSC), collector number 677. Current market price: $0.41 (foil $1.66), TCGplayer market prices via Scryfall.
Whenever Alex Wilder or another creature you control enters, if you cast it from anywhere other than your hand, it gets +2/+0 and gains haste until end of turn. Escape—{2}{R}, Exile three other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)