Jasnah, Elsecaller Scholar

Hexproof

If a creature you control would be put into your graveyard, exile it instead. You can cast creature spells from exile by paying their mana cost plus {2}. When you cast a creature spell from exile, it enters with a +1/+1 counter on it and you gain 2 life.
{w}{b}: Exile Jasnah, Elsecaller Scholar. Return her to the battlefield at the beginning of the next end step.