The Reaver Cleaver is a rare Legendary Artifact — Equipment card from The List (PLST), collector number DMC-8. Current market price: $26.58, TCGplayer market prices via Scryfall.
Equipped creature gets +1/+1 and has trample and "Whenever this creature deals combat damage to a player or planeswalker, create that many Treasure tokens." Equip {3}