[quote=@Legend]
<Snipped quote by Audacious>

The natural elements certainly aren’t rare by any means. And several disciplines channel those forces. 
[/quote]

There needs to be a catalyst of sorts too, but that's very rare, not identifiable to the naked eye and very often, unintuitive. The whole idea is very rare, nature wasn't meant to exist in the form of the elements at all, so it is exceedingly uncommon. I just mentioned it as a possibility, but we'll almost definitely find a person.