Greenwarden of Murasa is a mythic Creature — Elemental card from Battle for Zendikar Promos (PBFZ), collector number 174p. Current market price: $4.04 (foil $3.88), TCGplayer market prices via Scryfall.
When this creature enters, you may return target card from your graveyard to your hand. When this creature dies, you may exile it. If you do, return target card from your graveyard to your hand.