Sword of Kaldra 251 (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 - $39.90
LP - $31.90
MP - $24.00
HP - $16.00
DMG - $8.00