The Way of the Rose — Tricia Sullivan

With the land of Everien in chaos as a voracious timeserpent wreaks havoc, Istar and her companions - Taratel, Jaya, and Tarquin the Free - embark on a perilous quest to the lost city of Jai Pendu in order to harness the power of the Sekk and the ancient sorcery of the elusive skyfalcon, in the epic conclusion of the Everien saga.