Change the Censure Demons ability of the Paladin Knight of the Chalice into Censure Fiends, meaning it can also work on Devils, Tharak Hounds, Tieflings, Yugoloths, and other deeply-evil Outsiders. A bonus can be added to make it more powerful against creatures that are Chaotic Evil.

Without a change like this, the ability is restricted to functioning on too narrow a slice of the game's monsters.