Crane Style (Combat, Style)Source Ultimate Combat pg. 1 (Amazon)
Your unarmed fighting techniques blend poise with graceful defense.
Prerequisites: Dodge, Improved Unarmed Strike, base attack bonus +2 or monk level 1st.
Benefit: You take only a –2 penalty on attack rolls for fighting defensively. While using this style and fighting defensively or using the total defense action, you gain an additional +1 dodge bonus to your Armor Class. Source Pathfinder Unchained pg. 116 (Amazon)
While using this style and fighting defensively or using the total defense action, when you are targeted with a melee attack, you can spend up to 3 stamina points and take an immediate action to increase your dodge bonus to AC against that attack by an amount equal to the number of stamina points you spent.