Cathedral Membrane is a uncommon Artifact Creature — Phyrexian Wall card from New Phyrexia (NPH), collector number 5. Current market price: $0.21 (foil $1.78), TCGplayer market prices via Scryfall.
({W/P} can be paid with either {W} or 2 life.) Defender When this creature dies during combat, it deals 6 damage to each creature it blocked this combat.