Perfect Self
At 20th level, a monk becomes a magical creature. He is forevermore treated as an outsider rather than a humanoid (or whatever his original creature type was) for the purpose of spells and magical effects. Additionally, the monk gains damage reduction 10/chaotic, which allows him to ignore the first 10 points of damage from any attack made by a nonchaotic weapon. Unlike other outsiders, the monk can still be brought back from the dead as if he were a member of his previous creature type. Finally, the monk gains the ability to enter a state of perfect calm. During this time, the monk can take no actions, but he does regain ki at the rate of 1 point per 10 minutes spent at calm. He cannot use this ability to gain an amount of ki in excess of his maximum.
EX-MONKS A monk who becomes nonlawful cannot gain new levels as a monk but retains all monk abilities.