Barbed Bloodletter is a common Artifact — Equipment card from Lorwyn Eclipsed (ECL), collector number 86. Current market price: $0.18 (foil $0.20), TCGplayer market prices via Scryfall.
Flash When this Equipment enters, attach it to target creature you control. That creature gains wither until end of turn. (It deals damage to creatures in the form of -1/-1 counters.) Equipped creature gets +1/+2. Equip {2}