Combat is second-nature to you, making you a deadly foe.
Prerequisites: Combat Expertise, base attack bonus +8.
Benefit: To activate Expertise of the Virtuoso, you must meditate to gain psionic focus. Focusing in this fashion requires a Concentration check 10 higher than normal. Once activated, this mantra lasts for 1 minute as long as you maintain psionic focus. While active and using Combat Expertise, the penalty imposed to your base attack bonus is divided by half (rounded up). You may expend your psionic focus during this mantra to make an attack of opportunity against a single opponent who attacks you.
Normal: The penalty to your attack rolls is equal to the bonus gained to Armor Class.
Special: A fighter may select this feat as a bonus feat so long as he meets the prerequisites.