O Naginata 157/165 (The List Reprints)

This Equipment can be attached only to a creature with power 3 or greater. Equipped creature gets +3/+0 and has trample. Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)

NM - $3.30
LP - $2.60
MP - $2.00
HP - $1.30
DMG - $0.70