Scytheclaw is a rare Artifact — Equipment card from March of the Machine Commander (MOC), collector number 375. Current market price: $0.31, 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 +1/+1. Whenever equipped creature deals combat damage to a player, that player loses half their life, rounded up. Equip {3}