[@Carlyle] Just out of curiosity, and to double checck, I have a few questions (potentially of a dumb or more obvious nature on my part, but I like to check to be super sure on things sometimes [s]overthinking powers, activate![/s]) about potential elements: 

1 ) How specific and how general can an element be? It seems something like 'Storm' is a bit too composite, but what about something peculiar like 'mud' (would it fall under Earth? Water? Neither) for example? 

2 ) Likewise, could someone get stuck with a hyper-niche element under a more general category, such as some poor soul getting revealed with something obtuse like a "Cesium" or "Mercury" element instead of just more general Metal or Earth? Or is it more limited to general sub-categories of an element like a 'stone' element or 'ice/snow' and such? 

3 ) And what about something also peculiar like "Plasma", as another example of a potential element idea, would that be a bit too finicky or non-natural for purposes of being an element or such? Would it just be lumped in with Lightning or Fire or such? :hmm