Nightingale Subterfuge

 is a special power the Dragonborn can use once a day to cause people and creatures in the spell's area of effect to attack anyone nearby for 30 seconds. It is received as part of choosing to become an Agent of Subterfuge one of three mutually exclusive rewards for the quest Darkness Returns. The Dragonborn may only choose one, the other two are Nightingale Strife and Shadowcloak of Nocturnal.