From Compendium of Worldly Lore
Needs review
Source: Player's Handbook
Description: You are adept at dodging blows.
Prerequisites: DEX 13
Required for: Awareness, Blackened Sight, Bounding Assault, Combat Archery, Combat Defense, Defensive Strike, Defensive Throw, Epic Dodge, Karmic Strike, Mobility, One-Strike Blade, Rapid Blitz, Roof-Jumper, Roofwalker, Sahuagin Flip, Shot on the Run, Spring Attack, Thundering the Sky, Whirlwind Attack
During your action, you designate an opponent and receive a +1 dodge bonus to Armor Class against attacks from that opponent. You can select a new opponent on any action. A condition that makes you lose your Dexterity bonus to Armor Class (if any) also makes you lose dodge bonuses. Also, dodge bonuses (such as this one and a dwarf’s racial bonus on dodge attempts against giants) stack with each other, unlike most other types of bonuses.