The Last Wandbearer - Magician's Apprentice by Rowan Kingsley

In the ancient forest of Wyrmwood, a young orphan named Kya discovers a shattered wand, said to be unbreakable, and miraculously restores it. His act draws the attention of Miska, a reclusive magician bound by ancient knowledge, who takes Kya in as his apprentice. As Kya grows, so too does a darkness spreading across the land. At eighteen, war erupts, and Kya and Miska are thrust into a battle against rising evils: the malevolent Elakon, hordes of orcs, and the undead led by the fearsome wildling chief, Kraukov. Their journey takes them to the drowned city of Vessul, where fog suffocates the streets and the dead stir beneath the water's surface. There, they confront Balakon, the sinister gatekeeper of the First Tower. Though the tower falls, the threat is far from over. Joined by the determined Talyssa, the trio travels east to the haunted Deadlands in search of the Second Tower, The Tower of Bones, an otherworldly structure pulsing with eerie life. As Kya's magical strength deepens, he must face the terrifying truths of his power and legacy. In the ruins of Vessul, he uncovers Kraukov's final message: a grimoire of fire and fear. But the true threat lies farther still. In the frozen north, beyond the ice-ridge, stirs the Third Tower. Unborn. Dormant. Waiting. Kya is the last wandbearer, and only he can stop what's coming. But to do so, he must confront a darkness greater than war: himself.