Dorothy and the Wizard of Oz

When Ozma is practicing magic and can't remember the magic word, Dorothy yells Abracadabra. But in Oz, that magic word actually takes magic away. No worries, it only lasts a day. Too bad today is the magic contest where wizards, witches and people of all magic groups come for a huge competition. Whoever wins gets the wishing stone and one wish. Dorothy knows they have to keep that prize out of Wilhelmina's hands. Can Dorothy and the gang help Queen Ozma win using some down home Kansas magic?