Align Weapon(Player's Handbook v.3.5, p. 197)
Transmutation [see text]
Level: Cleric 2, Vassal of Bahamut 2, Knight of the Chalice 2, Death Master 2, Savant 2 (Divine), Artificer 2, Abyss (SpC) 1,
Components: V, S, DF,
Casting Time: 1 standard action
Target: Weapon touched or fifty projectiles (all of which must be in contact with each other at the time of casting)
Duration: 1 min./level
Saving Throw: Will negates (harmless, object)
Spell Resistance: Yes (harmless, object)
Align weapon makes a weapon good, evil, lawful, or chaotic, as you choose. A weapon that is aligned can bypass the damage reduction of certain creatures, usually outsiders of the opposite alignment. This spell has no effect on a weapon that already has an alignment, such as a holy sword.
You can't cast this spell on a natural weapon, such as an unarmed strike.
When you make a weapon good, evil, lawful, or chaotic, align weapon is a good, evil, lawful, or chaotic spell, respectively.