True Alignment

A True Aligned or Pure Aligned weapon is infused with the power of an alignment. It does an additional 1d6 damage to targets of other alignments and can only be wielded by characters of the matching alignment. This requirement can be bypassed with a Use Magic Device skill of 20 or higher. Note that you only need to hit UMD 20 to equip the item; once equipped, it will stay equipped until you log out or switch weapons.