Soul of New Phyrexia is a mythic Artifact Creature — Phyrexian Avatar card from The List (PLST), collector number M15-231. Current market price: $0.73, TCGplayer market prices via Scryfall.
Trample {5}: Permanents you control gain indestructible until end of turn. {5}, Exile this card from your graveyard: Permanents you control gain indestructible until end of turn.