Tri-Sentinel, Act of Vengeance is a rare Legendary Artifact Creature — Robot Villain card from Marvel Super Heroes Commander (MSC), collector number 456. Current market price: $2.87, TCGplayer market prices via Scryfall.
Flying, menace, trample When Tri-Sentinel enters, for each opponent, Tri-Sentinel deals 3 damage to up to one target creature that player controls. Unearth {7} ({7}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)