Master of the Open Palmed Defense (Achievement)

You are dedicated to self-perfection, and see unarmed combat as a natural example of that perfection.

Prerequisite: Flurry of blows class feature. Defeat (not necessarily kill) 25 characters with monk levels and a CR equal to or greater than your level in unarmed combat.

Benefit: When unencumbered and unarmored, you gain an enhancement bonus to Wisdom equal to half your monk level (or whatever class grants you an AC bonus) for the purpose of determining AC and CMD only.