"We'll hold," Celestia told her. There was a change in the texture of the air, and a bright flash emanated from the highest point of the castle, forming into a blue shield that descended to protect all parts of the city, ending just outside the shield they'd made to cover the gatehouse. Celestia ceased casting, as did the others, letting their magic fade away, while the Mareitanians maintained their bombardment on the new shield. "We have to."