Meteoric Mace is a uncommon Artifact — Equipment card from Commander Masters (CMM), collector number 243. Current market price: $0.20 (foil $0.42), TCGplayer market prices via Scryfall.
Equipped creature gets +4/+0 and has trample. Equip {4} Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)