Random Magic Weapons (any level)
(Self-revealing) valued at 8,312 gp.
An unholy weapon is evilly aligned and blessed with unholy power. It deals +2d6 points of bonus unholy (evil) damage against all of good alignment. It bestows one negative level on any good creature attempting to wield it. The negative level remains as long as the weapon is in hand and disappears when the weapon is no longer wielded. This negative level never results in actual level loss, but it cannot be overcome in any way (including restoration spells) while the weapon is wielded. Bows, crossbows, and slings so enchanted bestow the unholy power upon their ammunition.
Aura: Moderate evocation (evil)
Caster Level: 7th
Requirements: Craft Magic Arms and Armor, unholy blight, creator must be evil
Price: +2 bonus
Source: Dungeon Master's Guide v.3.5