It's mutually exclusive with Lodestone Lightning, so it's either drawn to metal which is basically much more common, or it's drawn to elemental material with maledictions.

The funny thing and is why I ultimately defer the idea to balance judgment - considered druids and rangers initially, and since I haven't tried an invoker in years, wasn't even considering them having call lightning.

And of course I agree about priority of this vs bug fixes. Current bugs/balance issues would be first on the TODO list before trying to add new content typically.