I would give a comment lioness but I'm on mobile with a white background and can't read it. Personally I think it'd be interesting to use a concept like crystal singing or another method that is learned/obtained from X source. Then using that method to coerce the materials from the spot
Divination already had a major role without a secondary skill anyways. Different aspects of it are either extremely useful for the average player or have a place in the "metagame"