Hero of the North Book 3 King of Nothing

Sometimes victory costs everything Owyn's brief moment of peace has been shattered into dust. Life with his wives was proving to be wonderful, but a malevolent force has possessed Freya, forcing her to flee the caste. Owyn and the king rally their army and march towards war, eager to rescue her at any cost. Sunneva, growing more powerful with magic by the day, vows to slay whoever has harmed her wife. The evil wizard Ezoleus, consumed by his lust for vengeance, commits unspeakable atrocities and unleashes a power so formidable that no one may survive it. He's willing to sacrifice entire cities to get his revenge on Owyn. When Owyn finally gets an opportunity to rescue Freya, he faces an unbeatable foe that cannot be reasoned with. Owyn's strength and wit are pushed to the very limit as he struggles to make it out alive.