You are able to focus and ignore distractions while in a battle.
Prerequisite(s): 4th-level Duelist
Benefit: While you are in combat and wearing light armor or no armor and not using a shield, you gain a +4 bonus to Will saves against mind-affecting effects and to Perception and Sense Motive checks made against your opponents. This bonus begins when you make an attack and ends if you have not attacked within a number of rounds equal to your duelist level.
Undefeatable: The Collected Feats Sourcebook, Copyright 2009 – 2010, Louis Porter Jr. Design, Inc. Undefeated, Copyright 2011, Louis Porter Jr. Design, Inc.