You fight very furiously with two weapons.

Prerequisites: BAB +4, two-weapon fighting, Dexterity 17+

Benefit: Every time you are normally allowed to make single attack with your main hand, you may make an attack with your offhand as well. E.g. at attacks of opportunity (the bonus attack does not count as a separate attack of opportunity when determining how many attacks of opportunity you may perform), cleaves, charges, whirlwind attack and standard actions. If you perform a full-attack, while being hasted and having 6/1 base attack bonus, you would be allowed to attack three times with your main and three times with your offhand. The bonus from this feat replaces the normal effect of two weapon fighting (and also improved, greater two weapon fighting) and other features that allow you to attack with your offhand. When using special strikes such as a strike combat maneuver, specify whether you want to improve the main hand or the off hands attack before rolling the attack.