Even though you were blasted four or five yards underground and dug around in total darkness, you were far from blind; the staff had been knocked from your grasp during Dash’s counterattack, and was now in the hooves of said pony. You know this because the staff is actively telling you, snitching on the group through your newfound kinda-sorta-maybe-telepathic link. All you have to do is listen to it’s intel, and do some very rusty silent communication of your own back at it, getting the angle just right to snatch it out of her grasp.