Bestiary 4 | Monsters | Apocalypse Locust | Special Abilities | Maddening Buzz
When three or more apocalypse locusts in a group simultaneously flap their
wings, they create a loud buzzing sound capable of driving other creatures mad. Any creature within a range of 100 feet + 10 additional feet per locust must succeed at a DC 15 Will save or go mad as if affected by a
confusion spell (caster level equal to the locusts' CR plus the number of locusts present). This is a sonic mind-affecting effect. The DC for the save is Charisma-based.