Tri-Sentinel, Act of Vengeance

Legendary Artifact Creature — Robot Villain

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.)