Half Wild by Sally Green
After finally meeting his elusive father, Marcus, and receiving the three gifts that confirm him as a full adult witch, Nathan is still on the run. He needs to find his friend Gabriel and rescue Annalise, now a prisoner of the powerful Black witch Mercury. Most of all he needs to learn how to control his Gift – a strange, wild new power that threatens to overwhelm him.
Meanwhile, Soul O’Brien has seized control of the Council of White Witches and is expanding his war against Black witches into Europe. In response, an unprecedented alliance has formed between Black and White witches determined to resist him. Drawn into the rebellion by the enigmatic Black witch Van Dal, Nathan finds himself fighting alongside both old friends and old enemies. But can all the rebels be trusted, or is Nathan walking into a trap?