Isareth the Awakener [Core Set 2019]

Set: Core Set 2019 Type: Legendary Creature — Human Wizard Rare Cost: {1}{B}{B} Deathtouch Whenever Isareth the Awakener attacks, you may pay {X}. When you do, return target creature card with converted mana cost X from your graveyard to the battlefield with a corpse counter on it. If that creature would leave the battlefield, exile it instead of putting it anywhere else.