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.