Dual Strike

(Sword and Fist: A Guidebook to Monks and Fighters, page 6, DnD 3.0)

[General]

Your combat teamwork makes you a more dangerous foe.

Prerequisite

Combat Reflexes, Base attack bonus +3

Benefit

If you and an ally both have this feat and are flanking an opponent, you both get a +4 bonus on your attack roll.

Normal

The standard flanking attack roll bonus is +2.