The Reaver Cleaver is a rare Legendary Artifact — Equipment card from Secret Lair Drop (SLD), collector number 2095. Current market price: $26.51, 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}