The Oath (Chronicles of the Ordained, #1)

The saga has sword & sorcery, dragons, fleogans, witches, and wizards. Seven hundred years ago, the Knights of the Ordained banished the demon, Asmeodai. Buried deep beneath Wahi Tapu Temple, the evil became a distant memory. But Asmeodai seethed in hatred for those that condemned him to this prison. He has survived only for his chance to enact his revenge.