Your dexterous maneuvers and skilled acrobatics allow you to slip past a foe’s defenses and deliver an accurate strike against him.
Prerequisite: Tumble 12 ranks.
Benefit: If you succeed in using Tumble to avoid an opponent’s attack of opportunity, you gain a +4 bonus on the next attack that you make against that foe as long as the attack occurs before the end of your current turn.
Special: A fighter can select Acrobatic Strike as one of his fighter bonus feats.
Source: Player’s Handbook II, page 71.