From Pathfinder Lost Omens Knights of Lastwall, which isn't enabled.

Instinctual Interception

FEAT 14

Prerequisites Knight Vigilant Dedication; Interrupt Charge

You react to movement with hardly a thought, seeming constantly poised to spring. At the start of each of your turns, you gain an additional reaction that you can use only to Interrupt Charge.

Pathfinder Lost Omens Knights of LastwallOGL