The Wizards of Once by Cressida Cowell (Paperback)

The Wizards of Once opens a fantasy series from Cressida Cowell, the bestselling author of How to Train Your Dragon. In a world split between magical Wizards and non-magical Warriors, Xar is a Wizard prince who cannot cast a single spell, while Wish, a Warrior princess, secretly owns a forbidden magical object. When their paths cross in the wildwood while tracking a dangerous witch, an adventure begins that could change both of their worlds.