The Spider Queen Rose desires to be the sole deity of the Zor Elves.
Not to mention the younger generation like his grandson Sivontham, even his children Velen and Eilistraee are targeted by Rose.
Sivontham doesn't have any proper church following on the main Material Plane. In fact, in a southern Underdark city, because of the appearance of Sivontham's avatar, he attracted a lot of Zor Elf worship, but soon his followers were expelled by the Church of Rose and driven directly to the labyrinthine depths beneath Deepwater City.
If the Divine Country of Spider Queen Rose is a vast empire, then Sivontham's Divine Country is like a small fiefdom within it.
But a Divine Country, no matter how small, is still a Divine Country.
Duncan fought at a significant disadvantage against it.
In the Great Pit.
