A sparkling page-turner full of surprising twists, clever girls, and magical wonders!" -Tui Sutherland, #1 New York Times bestselling author of the Wings of Fire series Magic is bright in Arden, where Tillers wield magic with plants, Spinners with thread, Forgers with metal, and Gemmers with jewels. The source of all magic, however, is unicorns-creatures that, for the past three hundred years, have been all but extinct from Arden, while the guilds...