Flanking Maneuver

Your keen leadership grants you and your allies a
sudden advantage in combat. When you flank an
opponent, you maximize your allies' openings.
You can use this strike when you and any
number of allies flank an opponent you designate.
As part of this maneuver, you make a melee
attack against the flanked opponent. If it hits, any
ally flanking your foe can immediately make a
melee attack against that creature. These attacks
are not attacks of opportunity.