I’m creating stories. Is it true that an exarch or even chosen of some gods are given no god power, depending on their own powers? I need a no power exarch It's entirely up to the deity. The title can be empty, or can mean the mortal has unreliable (come and go) wild talents…or superpowers. Up to the DM. But priests and therefore the general public, in-world, expect that when the term "exarch" is used, roster of powers is implied.

— Ed Greenwood (@TheEdVerse) October 21, 2018