An unholy weapon is imbued with unholy power. This power makes the weapon evil-aligned and thus bypasses the corresponding damage reduction. It deals an extra 2d6 points of 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.
Projectile weapons bestow this property upon their ammunition.

Prerequisites: Craft Magic Arms and Armor, unholy blight, creator must be evil.
Cost to Create: 4,000 gp (plus 300 gp for base item), 320 XP, 8 days.