War of Magic. Dual Magics, #4

In the final book of the Dual Magics series, Vatar will need both kinds of magic to prevent all-out war. Enemies unite to move against his adopted city, just when that city is torn by unrest. Vatar started the turmoil by revealing secrets that had been kept for six hundred years. Now, he's forced to accept the responsibility and power he'd rejected in order to bring the population together against this threat.
And the greater challenge is still ahead, when the enemy turns their attack onto the plains. The magic-fearing tribe of his birth have no way to stand against the sorcery that will be unleashed against them. Unless Vatar and his friends defend them. But that may cost Vatar his first home, his identity, and half his family. Because if he reveals his magic, he may never be able to go home again.