Triumvante: Book Three of the Song of the Remnant

Descending into the Shadow's domain, Serah begins her lessons in wizardry. She learns more than just how to cast magical spells however. She uncovers the terrible plot of a malevolent dragon to end the world and must find a way to foil the most powerful of magical creatures while preventing the Shadow from invading Texas. Along the way, she discovers the truth of "The Song of the Remnant". The concluding book in the trilogy: The Song of the Remnant.