Maddening Buzz

When three or more greater apocalypse locusts in a group simultaneously flap their wings, they create a loud buzzing sound capable of driving other creatures mad. Any creature within 100 feet must succeed at a Will save each round or the first time it enters the area. On a failed save, the creature goes mad as if affected by the confusion spell (DC 19 + the number of locusts present). This is a sonic mind-affecting effect. The save DC is Charisma-based.