Just been thinking about Zariel & Radiant Idols in Eberron, would you see Zariel as a powerful Devil lord without the Nine Hells in Eberron?. Also, do you see the old 3.5 rules where worshipers of a Radiant Idol could take a domain focus being viable?. Personally, rather than making her a fallen angel, I'd make Zariel a former lieutenant of an overlord who now seeks to steal her master's power, and give her control of a demiplane within Khyber.
— Keith Baker (@HellcowKeith) December 2, 2019
Followers of a radiant idol could manifest divine magic, yes. But the power isn't coming directly from the idol; it's driven by the faith of the follower.
— Keith Baker (@HellcowKeith) December 2, 2019