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.
Flurry of Blows
At 1st level, a monk can make a flurry of blows as a full-attack action. When making a flurry of blows, the monk can make one additional attack at his highest base attack bonus. This additional attack stacks with the bonus attacks from haste and other similar effects. When using this ability, the monk can make these attacks with any combination of his unarmed strikes and weapons that have the monk special weapon quality. He takes no penalty for using multiple weapons when making a flurry of blows, but he does not gain any additional attacks beyond what's already granted by the flurry for doing so. (He can still gain additional attacks from a high base attack bonus, from this ability, and from haste and similar effects).
At 11th level, a monk can make an additional attack at his highest base attack bonus whenever he makes a flurry of blows. This stacks with the first attack from this ability and additional attacks from haste and similar effects.
Stunning Fist
At 1st level, the monk gains Stunning Fist as a bonus feat, even if he does not meet the prerequisites.
At 4th level, and every 4 levels thereafter, the monk gains the ability to apply a new condition to the target of his Stunning Fist. This condition replaces stunning the target for 1 round, and a successful saving throw still negates the effect.
At 4th level, the monk can choose to make the target fatigued. At 8th level, he can make the target sickened for 1 minute.
At 12th level, he can make the target staggered for 1d6+1 rounds.
At 16th level, he can permanently blind or deafen the target.
At 20th level, he can paralyze the target for 1d6+1 rounds. The monk must choose which condition will apply before the attack roll is made. These effects do not stack with themselves (a creature fatigued by Stunning Fist cannot become exhausted if hit by Stunning Fist again), but additional hits do increase the duration.
Unarmed Strike
At 1st level, a monk gains Improved Unarmed Strike as a bonus feat. A monk's attacks can be with fists, elbows, knees, and feet. This means that a monk can make unarmed strikes with his hands full. There is no such thing as an off-hand attack for a monk striking unarmed. A monk can apply his full Strength bonus on damage rolls for all his unarmed strikes. A monk's unarmed strikes deal lethal damage, although he can choose to deal nonlethal damage with no penalty on his attack roll. He can make this choice while grappling as well.
A monk's unarmed strike is treated as both a manufactured weapon and a natural weapon for the purpose of spells and effects that enhance or improve either manufactured weapons or natural weapons.
