Ilista, Sacred Revitalizer

As long as Ilista, Sacred Revitalizer is tapped, it has hexproof.
Substantiate —Whenever Ilista becomes tapped, if it's not attacking, exile the top card of your library. Until the end of your next turn, you may play that card.
{2}{g}, {t}, Discard a card: Return target creature or land card from a graveyard to its owner's hand. You gain 6 life.