The Death Knight Chronicles
The Theists were are powerful faction of Warlocks within the Ivory Tower. They gained their position and prominence from their control over the gods themselves in thanks to the god-binding pacts they enacted at Burjbil. This gave the Theists the power to literally regulate religion within Vesper. On a local level, the Theist Dicarre formed the Ivory Towers most direct method of control. Moreover, thanks to their god-binds, the Theists managed to shelter themselves from Elazar’s assault on the Ivory Tower.