Unitas: Trio. Seeder Wars Series, #3

Lost Secrets of the Green LandsLeading Princess Kaylah to Seeder borders was only Rachel and Saff's first step in stopping a never-ending war. The Ivy queen and king's assassination leaves Prince Soren in sole control of their troops and resources. Banding together, the Unitas group sets out to discover forgotten secrets to their pasts and powers. They work to discover how to cure the poisoned Seeder lands, as well as how to best infiltrate the Ivy palace, all while recruiting and training in secret.
Going undercover behind enemy lines, Rachel's forced to face the trauma and betrayals in her past. Saff has to face the family she abandoned, come to terms with news about her unique power-wielding capacity and future, and learn to trust allies of the nation that has already taken too much from her family and people. Tensions rise at the Unitas camp and safe houses, threatening their unity movement.
Amidst kidnappings and mysterious disappearances, Unitas is forced to dig deep and take unexpected measures to bring the battle to Soren with hopes of a win.