The Zero Curse — Christopher G. Nuttall

Caitlyn Aguirre is no magician ... ... But that doesn't make her useless. After discovering her true talent and uncovering the long-lost secret behind Objects of Power, Cat returns to school - intent on showing everyone what she can do. But her mere existence is a threat to the balance of power, convincing some to befriend her, some to try to use her ... and some to remove her. And when she and her closest friends become the target of a deadly plot, she must use all her wits to save them and escape before she becomes the first casualty in a deadly war.