Seems like there might be a lesson here, to let her Spirits fight in her place -- but Celestia was far too stubborn to let the matter go, when push came to shove. She maintained her shield as she lifted her head, firing short, quick blasts of magic at the Nightmares. Dizzy and Hero -- bless them, she owed them a cake when this was all over -- continued their rampage through the bats as well.