Glissa, the Traitor is a mythic Legendary Creature — Phyrexian Zombie Elf card from Secret Lair Drop (SLD), collector number 1217. Current market price: — (foil $13.51), TCGplayer market prices via Scryfall.
First strike, deathtouch Whenever a creature an opponent controls dies, you may return target artifact card from your graveyard to your hand.