Through working together, you and an ally are capable of striking vital locations..

Prerequisites: Sneak Attack +1d6, Base Attack Bonus +3

Benefit: Whenever you and another ally flank a creature both you and that ally increase the critical threat range of your weapons by 1 (so a weapon with a 19-20 threat range would increase to 18-20) This additional critical threat range is not multiplied by abilities such as keen or the Improved Critical feat and is applied after abilities such as those are applied.

Note: This feat was initially published by Dreamscarred Press (Path of War pg. 20), but has been edited for use with the pathFinal Fantasy ruleset.