Blind Rage

Rage ability.

You may not end your rage voluntarily. Once you enter a rage, you continue to rage for the entire duration. While in a rage, you must attack a creature every round if able. You can charge or move in order to make the attack, and you may move to attack a foe rather than stay still to attack a friend. If there are no creatures within sight, you attack the nearest breakable object. You may attempt a DC 15 Will save once per round on your turn in order stop attacking an ally. If foes become visible, you may immediately switch targets and engage them.

Your ability to distinguish between friend and foe is limited once you enter a rage.