Book excerpt: Oscar Diggs''s life suddenly changes when he''s hurled from uneventful Kansas into the enchanting Land of Oz. There, he must transform from a small-time magician into a powerful wizard in order to save the good inhabitants of Oz from the wicked forces at large. Filled with exciting photos from the upcoming movie, Oz The Great and Powerful, this junior novel tells the tale of how Oz became a great wizard!