Isareth the Awakener is a uncommon Legendary Creature — Human Wizard card from Commander Masters (CMM), collector number 168. Current market price: $0.27 (foil $0.29), TCGplayer market prices via Scryfall.
Deathtouch Whenever Isareth attacks, you may pay {X}. When you do, return target creature card with mana value 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.