Tangleweave Armor is a rare Artifact — Equipment card from Phyrexia: All Will Be One Commander (ONC), collector number 36. Current market price: $0.37 (foil $0.34), TCGplayer market prices via Scryfall.
Living weapon (When this Equipment enters, create a 0/0 black Phyrexian Germ creature token, then attach this to it.) Equipped creature gets +X/+X, where X is the greatest mana value among your commanders. Equip {4}