From Pathfinder Lost Omens Tian Xia Character Guide, which isn't enabled.

Tempest Gaze

FEAT 13

Your third eye grows stronger and more powerful. When you use Storming Gaze, you can increase the area to a 30-foot cone and double the number of damage dice; half deal electricity damage, and half deal sonic damage. If you Storming Gaze in this way, you can't use it again for 1 hour.

Pathfinder Lost Omens Tian Xia Character GuideORC