Supernal Pact

Supernal Pact enters the battlefield with three pact counters on it.
At the beginning of your upkeep, remove a pact counter from Supernal Pact, return target permanent card from your graveyard to the battlefield, then Supernal Pact deals 3 damage to target creature or player and you gain 3 life.
Then if there are no pact counters on Supernal Pact, you lose the game.