Bucky Barnes, Eager Ally is a uncommon Legendary Creature — Human Soldier Hero card from Marvel Super Heroes Commander (MSC), collector number 586. Current market price: $0.27 (foil $0.85), TCGplayer market prices via Scryfall.
Vigilance When Bucky Barnes dies, look at the top four cards of your library. You may reveal an Equipment, Hero, or Soldier card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.