When Starfrost Swirl‘s Flowfrost Arrow first hits an opponent, or its Rimestar Flare hits an opponent, 1 Detector stack from Passive Talent “Suppressive Barrage” will be generated. You must have unlocked the Passive Talent “Suppressive Barrage” first.
Good leak. They just ended up swapping Emilie and Shenhe. I guess it makes sense with the power...