Everything you need to understand or teach The Wishsong of Shannara by Terry Brooks.
"The Wishsong of Shannara" is the third novel in a series that features members of the Ohmsford family completing quests to save the Four Lands. In this novel, Brin Ohmsford and her brother, Jair, were born with Elven magic they call the wishsong. Brin is able to alter nature with her wishsong, while Jair can only create illusions. Their father has forbidden them from using the magic, but sometimes they still...