Luna stepped off a low balcony on the north wing of the castle and took to the air. As she banked over the courtyard, she could hear the muffled gasps of a few unicorns on the ground below her. For a fleeting moment, she had a mad impulse to swoop down on them and knock them over with her hooves—did they really think she didn’t hear them?—but the thought passed as soon as she was over the labyrinth.