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From Pathfinder #204: Stage Fright, which isn't enabled.

Fight Choreography

FEAT 18
Prerequisites Acrobat or Gladiator Dedication; master in Theater Lore

You've spent enough time training in stage fighting and teaching a wide range of stunts that you can prepare your companions with directions on how to avoid peril in battle. You can Aid an ally's Acrobatics or Athletics check with a Theater Lore check. You gain the Swift Choreography reaction.

Pathfinder #204: Stage FrightORC