Multiple creatures focus their anger against an enemy. Choose one enemy creature that you can see. The subjects of shared wrath gain a +1 morale bonus on attack rolls and weapon damage rolls against that designated creature for every three caster levels you have (at least +1, maximum +3). The subjects also receive this bonus on caster level checks made to overcome the creature's spell resistance, if any. At 12th level, the subjects gain the benefits of the Improved Critical feat on attack rolls made against the designated creature. This effect doesn't stack with any other effect that expands the threat range of a weapon. All subjects of shared wrath receive their bonuses against the same creature.