As an attack action
, the wearer can cause the amulet to emit a horrid psionic shriek that disrupts the brain waves of every living creature in a 15-foot-radius burst
centered on the wearer (the wearer is unaffected). The shriek deals 7d6 points of damage
, or half with a successful Will save (DC 17). Power resistance
applies. Using a screaming amulet does not provoke an attack of opportunity
. Activating the amulet costs 10 power points
; if the wearer does not have 10 power points
to spend, he or she cannot activate the item.