From Pathfinder Book of the Dead, which isn't enabled.

Frightful Moan

FEAT 4

ARCHETYPE AUDITORY DIVINE EMOTION FEAR MENTAL

Activity 2 actions

Archetype Ghost

Frequency once per 10 minutes

You lament your fate, forcing each living creature in a 30-foot emanation to attempt a Will save against your class DC or spell DC, whichever is higher.

Success The creature is unaffected and temporarily immune to Frightful Moans for 1 minute.

Failure The creature is Frightened 1.

Critical Failure The creature is Frightened 2.

Pathfinder Book of the DeadOGL