"It’s not," she replied. Casting magic without a wand was tricky; it required either an extreme loss of emotional control or the very forceful and concentrated effort of harnessing one’s innate magical trace upon a given target. She still had no idea how Malfoy cast the freezing spell on Ron. This feat was even more bewildering considering he had been without his magic for quite some time. In comparison, she supposed that angrily burning up a petition wasn’t quite the same.