Based on what is a fantasy novel by a  game designer who has written more than two dozen novels, which second novel is "Return of the Archwizards" ?
The Siege (Forgotten Realms novel): The Siege is a fantasy novel by Troy Denning, set in the world of the Forgotten Realms, and based on the "Dungeons & Dragons" role-playing game. Troy Denning: Troy Denning (born 1958) is a fantasy and science fiction author and game designer who has written more than two dozen novels.
Dungeons & Dragons