Terrible Revelation (Su)

As a swift action after she has identified an enemy with a Knowledge skill or Profession (Yog-Sothothery philosopher) during a delirious frenzy, the barbarian can shout a terrible insight learned from her delirious frenzy to grant all allies that can hear her an insight bonus equal to half her barbarian level on attack rolls against that enemy to confirm critical hits. Those allies must succeed at a Will save against DC 10 + 1/2 the enemy’s CR or be shaken for 1 round. The barbarian must have the delirious frenzy ability to choose this rage power.