You merge your discipline style with your other styles to form a more perfect fighting style.
Prerequisites
Base attack bonus +6, any two style feats from different styles, ability to initiate martial maneuvers from two or more disciplines.
Benefit
Choose one discipline style feat that you possess, that is a style feat that lists knowledge of a maneuver or stance from one specific martial discipline as a prerequisite.
You may use the chosen style at the same time as any one other style. Entering a fighting style is still a swift action, but you can assume both the chosen discipline style and another style simultaneously with the same action. This feat doesn’t stack with other abilities that allow you to have multiple styles active at the same time.
Special
If you possess the Fuse Styles feat, you can enter two fighting styles, a ki stance, and a martial stance with the same swift action.
Normal
You may use only one fighting style at a time.