When the spiritualist reaches 7th level, as a swift action, the phantom can emit a 20-foot-radius aura that amplifies the fear conditions of enemies within it if they fail their Will saving throws (DC = 10 + 1/2 the phantom's Hit Dice + the phantom's Charisma modifier). A shaken enemy in the aura becomes frightened, a frightened creature becomes panicked, and a panicked creature cowers. This effect lasts either as long as the enemy stays within the aura and is under the condition of the initial fear effect, or for a number of rounds after it leaves the aura equal to 1/2 the phantom's Hit Dice, or until the end of the original fear effect's duration, whichever comes first. A creature that succeeds at the saving throw is immune to this effect from the same phantom for 24 hours. This is a mind-affecting fear effect. The phantom can use this ability in either ectoplasmic or incorporeal form.