The thousand eyes / A. K. Larkwood.

Two years after defying the wizard Belthandros Sethennai and escaping into the great unknown, Csorwe and Shuthmili have made a new life for themselves, hunting for secrets among the ruins of an ancient snake empire. Along for the ride is Tal Charossa, determined to leave the humiliation and heartbreak of his hometown far behind him, even if it means enduring the company of his old rival and her insufferable girlfriend. All three of them would be quite happy never to see Sethennai again. But when a routine expedition goes off the rails and a terrifying imperial relic awakens, they find that a common enemy may be all it takes to bring them back into his orbit.