Steven E Schend: 2 books

A Call for Heroes! A young group of friends stumble across a terrifying conspiracy that holds the heir to the Blackstaff, the defender of the city of Waterdeep, in terrible danger. These friends must search deep within themselves to become the heroes their city needs to save its champion from...

Khelben Arunsun, Chosen of Mystra, Archmage of Waterdeep, is as close to a demigod as you're likely to meet on the streets of Faerûn's mightiest city. But when the skies rain lightning and a long-forgotten city arises from the earth, he can seem like just another wizard.