Needs review
Source: Way of the Open Hand

Description: You have a heigthened ability to gauge an opponents strength through learning Tasaii-do.

Prerequisites: Improved Unarmed Strike, Base Attack Bonus +6, Tasaii-do Novice, Tasaii-do Intermediate, Tasaii-do Advanced

Required for: Tasaii-do Master

You gain a +2 to unarmed attack and damage rolls against any opponent who has used a feat or ability to lower their attack bonus (such as Power Attack or Combat Expertise) since their last action.