Feat Double-Weapon Finesse
You are amazingly deft at controlling a double-weapon using its own inertia.
Prereqs: Proficient with chosen double-weapon, Weapon Finesse, Base Attack Bonus +1 or higher, Two Weapon Fighting.
Benefits: When fighting with a double-weapon as though with two weapons, you may use your Dexterity modifier instead of your Strength modifier on attack rolls. This bonus applies to both your main and off-hand attacks.
Normal: You can only use your Strength modifier when attacking with a double-weapon.
Special Notes: You may take this feat multiple times. Each time you take the feat, it applies to a new double-weapon. It does not apply when using a double-weapon two-handed.