The Mage’s Second Chance by Hawke Oakley

Betrayed by his own mate.
Considered a legend in his own time, infamous mage Halo Fire-Eater lacked nothing. With his loving alpha Kassius and their precious daughter, Halo had everything an omega could ever desire – until his very own mate sold him out to their greatest enemy.
Destroyed by an impossible choice.
Magic is evil. Alpha Knight Kassius tried to avoid the dark whispers in Cinderhollow, focusing instead on protecting his mate Halo and their child. Kass ignored the warnings that his child would be born a mage, too – his family was the most important thing in his life, and words alone wouldn’t change that. But when Kass witnesses Halo commit a horrible deed with his magic, Kass can’t look at his mate the same way ever again. Kass does what he thinks is right – even if it means ripping their lives apart.
Pursued by evil.
Forsaken and hurt, Halo escapes to the only place he and his child can truly be safe – the future. But he’s not alone. Old enemies lurk beyond Cinderhollow’s barrier, and the key to saving his family might be the same alpha who betrayed him all those years ago.