[@Rune_Alchemist]
Knowledge actively hurts Sommler, so the greater Iva's understanding of the world the weaker Sommler becomes. The simple fact that Iva and his library exist is probably the biggest threat to his power. So it'll be an..... INTERESTING relationship.

I had considered that Iva and Sommler would be as fire and water. Sommler destroys knowledge and certainty, while Iva creates it. But I suppose that from Iva's perspective that might be a good thing.

Possessing both the domains of Knowledge and the Unknown..... that would be a strange god indeed. What would that be like? Certainly it would be rather interesting.