Luke Cage, Power Man is a uncommon Legendary Creature — Human Hero card from Marvel Super Heroes (MSH), collector number 20. Current market price: $0.15 (foil $0.22), TCGplayer market prices via Scryfall.
Unbreakable Skin — Whenever Luke Cage attacks alone, he gets +2/+0 and gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy him.)