Servant of the Dragon (1999) is a fantasy novel in the series, Lord of the Isles by author David Drake.
In the introduction, seven wizards use a mummified reptilian creature to cast a spell to raise Yole from the depths. Meanwhile, the main characters are in Valles, where a magical blue bridge has appeared where there hasn't been a bridge for hundreds of years. Upon seeing it Tenoctris ascertains that while it is dangerous, it is not associated with the evil Throne of Malkar. While investigating the bridge and the mysterious happenings associated with it, a massive bird appears, snatches up Sharina, and disappears with her.
Cashel immediately determines to find Sharina and rescue her. Tenoctris uses her art and determines that whoever sent the bird to kidnap Sharina means her no harm. She sends Cashel to Landure, a wizard on another plane who can help him. Cashel arrives next to an ajar door; a beautiful woman rushes out, pursued by an angry wizard. Cashel figh