Paired Opportunists (Feat)
You know how to make an enemy pay for their lax defenses.
Prerequisites: Level 16
Benefit: Whenever you are in combat with an ally who also has this feat, you receive a +4 circumstance bonus on attacks of opportunity against creatures that you both threaten.
Special: Enemies that provoke attacks of opportunity from an ally who also has this feat also provoke attacks of opportunity from you so long as you threaten them (even if the situation or an ability would normally deny you the attack of opportunity).
This does not allow you to take more than one attack of opportunity against a creature for a given action, nor does it actually grant you additional attacks of opportunity — you must have attacks of opportunity available to make use of this feat.
Note: This is a Teamwork Feat, meaning it does nothing unless you and at least one other member of your party each possess this feat.