Ravager's Mace is a uncommon Artifact — Equipment card from Zendikar Rising (ZNR), collector number 235. Current market price: $0.12 (foil $0.17), TCGplayer market prices via Scryfall.
When this Equipment enters, attach it to target creature you control. Equipped creature gets +1/+0 for each creature in your party and has menace. (Your party consists of up to one each of Cleric, Rogue, Warrior, and Wizard.) Equip {2}{B}{R}