A corrupted weapon was once a blessed holy weapon. The taint of evil has been corrupted it, however, and the weapon is now in all ways a unholy weapon, dealing an additional 2d6 points of damage against all creatures of good alignment. In addition, the wielder gains a profane bonus on saving throws equal to the weapon’s enhancement bonus against the spells and abilities of good outsiders and a +5 competence bonus on Knowledge (planes) checks to identify good outsiders and their special powers or vulnerabilities. When the corrupted weapon special ability is added to an holy weapon, the weapon loses the holy property and gains the corrupted property, and the crafter must pay the price of adding a +1 enhancement bonus to the weapon.