Trudi Canavan - The Black Magician Trilogy - 01 The Magicians Guild

Each year, the streets of Imardin are purged of the poor and homeless by the powerful Magicians' Guild, and each year, gangs of local youths protest and resist, usually without effect. But this year, one such youth manages to injure one of the magicians, revealing herself to be magically gifted. What follows is the hunt for a girl called Sonea, whose magical powers have developed naturally, and who believes the guild will kill her if they find her, while the guild are far more concerned with the damage she could do to herself and others if not found in time.