dunCrystalDriftCaveStaff "Gadnor's Staff of Charming" [WEAP:00046E0B] maybe has an incorrect enchantement. Back then I thought that the Fury effect on it was intentional and that he was killed by the animals nearby after trying to calm them with the faulty staff. But Saints and Seducers adds a journal to Crystaldrift Cave:
https://en.uesp.net/wiki/Skyrim:Gadnor%27s_Last_Wishes
The journal makes it seem like Gadnor was not killed in the cave by the animals. So maybe the staff having the Fury effect is actually a mistake. In that case it should be replaced with an effect that fits the name. But I am unsure about this.