Oil of greater magic weapon +3
(Player's Handbook v.3.5, page 251)
Price (Item Level): 1,800 gp (5th)
Body Slot: —
Caster Level: 12th
Aura: Moderate; (DC 21) transmutation
Activation: Standard (applied)
Weight: —
A strange oil, with a sheen to it.
Grants the weapon it is applied to a +3 enhancement bonus, temporarily.
Prerequisites: Brew Potion, Greater Magic Weapon.
Cost to Create: 500 gp (plus 800 gp for base item), 40 XP, 1 day.