Sword of Kaldra 251/306 (Mirrodin)

Equipped creature gets +5/+5. Whenever equipped creature deals damage to a creature, exile that creature. (Exile it only if it's still on the battlefield.) Equip {4} ({4}: Attach to target creature you control. Equip only as a sorcery.)

NM - $38.40
LP - $30.80
MP - $23.10
HP - $15.40
DMG - $7.70