Atraxa, Grand Unifier is a mythic Legendary Creature — Phyrexian Angel card from Phyrexia: All Will Be One (ONE), collector number 196. Current market price: $18.63 (foil $20.17), TCGplayer market prices via Scryfall.
Flying, vigilance, deathtouch, lifelink When Atraxa enters, reveal the top ten cards of your library. For each card type, you may put a card of that type from among the revealed cards into your hand. Put the rest on the bottom of your library in a random order. (Artifact, battle, creature, enchantment, instant, land, planeswalker, and sorcery are card types.)