Scouring Rage
FEAT 6 free action
an instinct that allows you to change your additional damage from Rage to a different damage type
You Rage.
You emit a powerful surge of instinctual energy when you unleash your anger. Each enemy within 20 feet takes damage equal to your level (basic Fortitude save against your class DC) of the same type as your additional damage during that Rage.
Pathfinder Player Core 2ORC