The Sentry, Golden Guardian is a rare Legendary Creature — Human Hero card from Marvel Super Heroes (MSH), collector number 35. Current market price: $0.35 (foil $0.54), TCGplayer market prices via Scryfall.
Flying, vigilance, indestructible When The Sentry enters, target opponent creates The Void, a legendary 5/5 black Horror Villain creature token with flying, indestructible, and "The Void attacks each combat if able."