Raging Throw

You expend some of your rage to throw one opponent at another.

Prerequisite: Str 13, Con 13, rage class feature, Improved Bull Rush, Power Attack, base attack bonus +6.

Benefit: While raging, when you attempt a bull rush combat maneuver, you can spend 1 additional round of your rage as a swift action to add your Constitution bonus on your combat maneuver check to the bull rush. Further, if you bull rush an opponent into a square another creature occupies or into a solid object, the opponent and the creature or object take bludgeoning damage equal to your Strength modifier + your Constitution modifier.

Source: Ultimate Combat