Surestrike Trident 147/165 (Darksteel)

Equipped creature has first strike and "{T}, Unattach Surestrike Trident: This creature deals damage equal to its power to target player or planeswalker." Equip {4} ({4}: Attach to target creature you control. Equip only as a sorcery. This card enters unattached and stays on the battlefield if the creature leaves.)

NM - $2.21
LP - $1.77
MP - $1.21
HP - $0.80
DMG - $0.50