auditory illusion 

Traditions arcane, occult

Cast [>>] somatic, verbal

Range 30 feet; Targets 1 creature

Saving Throw Will; Duration varies

You bombard a target with distracting auditory illusions, surrounding them with a tumultuous cacophony of overlapping speech, whispers, screams, and muttering.

The target is flat-footed, takes a –2 status penalty to purely auditory Perception checks, and must succeed at a DC 5 flat check to use auditory abilities or verbal spell components. Similarly, a creature who attempts to affect the target with an auditory effect must succeed at a DC 5 flat check or the attempt fails. The duration depends on the target's Will save.

Critical Success The creature is unaffected.Success The duration is 1 round.Failure The duration is 3 rounds.Critical Failure The duration is 1 minute.

Heightened (7th) You can target up to five creatures.

Secrets of Magic, page 100.