AC Bonus
When unarmored and unencumbered, the monk adds his Wisdom bonus (if any) to his AC and CMD. In addition, a monk gains a +1 bonus to AC and CMD at 4th level. This bonus increases by 1 for every four monk levels thereafter, up to a maximum of +5 at 20th level.
These bonuses to AC apply even against touch attacks or when the monk is flat-footed. He loses these bonuses when he is immobilized or helpless, when he wears any armor, when he carries a shield, or when he carries a medium or heavy load.
Stunning Fist
At 1st level, the monk gains Stunning Fist as a bonus feat, even if he does not meet the prerequisites.
Evasion
At 2nd level, a monk can avoid damage from many area-effect attacks. If a monk succeeds at a Reflex saving throw against an attack that normally deals half damage on a successful save, he instead takes no damage. Evasion can be used only if a monk is wearing light armor or no armor. A helpless monk does not gain the benefit of evasion.
