Chronicles of Aelwyn #2: Eye of the Serpent by Robert N. Charrette

The second in the new Aelwyn trilogy. Simce the Timespell set them free, Yan Tanafres and Teletha have wandered far, seeking the lost city and secrets of the Dark Ones. But now Yan’s quest is interrupted by war, for the land of Kolvin is besieged. In the slaughter that sweeps across the land, Teletha must prove herself a warrior, and Yan will face the greatest test of any mage.