Defiant Shirren
Source Player Core pg. 67
Despite the passage of time, you remain resolute in your defiance of the Swarm and all forms of mental control. If you roll a success on a Will saving throw against an effect that was created by a creature with the kucharn trait or a creature that you know is allied with the Swarm, you get a critical success instead. You gain these benefits against any creature affected by a spell or effect that controls it. Additionally, you gain the Rebellious Defiance action.