Cranial Ram is a common Artifact — Equipment card from Modern Horizons 3 (MH3), collector number 180. Current market price: $0.20 (foil $0.30), 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/+1, where X is the number of artifacts you control. Equip {2}