Forgotten Realms: Return of the Archwizards Series by Troy Denning

From the depths of the demiplane of shadow comes a new magic so mysterious it confounds even the Chosen of Mystra. From beneath the dune seas of Anauroch escapes one of Toril's most powerful and ancient evils -- the phaerimm. From Evereska, the last elven refuge on comes word of invasion. From nowhere appears a group of enigmatic sorcerers determined to destroy the phaerimm and save Evereska . . . for purposes known only to themselves... moreFrom the depths of the demiplane of shadow comes a new magic so mysterious it confounds even the Chosen of Mystra. From beneath the dune seas of Anauroch escapes one of Toril's most powerful and ancient evils -- the phaerimm. From Evereska, the last elven refuge on comes word of invasion. From nowhere appears a group of enigmatic sorcerers determined to destroy the phaerimm and save Evereska . . . for purposes known only to themselves. From the author of "Crucible: The Trial of Cyric the Mad, Beyond the High Road, "and "Death of the Dragon" (with Ed Greenwood) comes the most Realms-shaking event since "The Threat from the Sea." less

The second installment in a four-part saga brings about the return of powerful and mysterious villains who would upset the entire balance of power in the Forgotten Realms world.

In the conclusion of the Return of the Archwizards trilogy, the forces of darkness overrun the ruined cities and kingdoms, and only one forgotten and tortured hero can bring hope to the devastated land. By the author of The Summoning and The Siege. Original.