Circle Student( Dragon Compendium)
[Fighter Bonus Feat, General]
You have been trained in a master's wheel, a form of fencing instruction that grants you focus and control.
Circle Master (DC) ,
By focusing your perceptions on only one opponent, you reap benefits at the cost of your ability to defend against the attacks of others. When in melee with the foe you designate as the focus of your Dodge feat, you may choose to gain an additional +1 dodge bonus to your Armor Class from attacks made by that creature and a +1 competence bonus on attack rolls against that foe. Unfortunately, during that round you take a -2 penalty to your AC against attacks by any other creature.
A fighter may select Circle Student as one of his fighter bonus feats.