Riot clearly needs to watch Avatar
https://s22.postimg.org/4dz5aa1dt/four_elements_1024x568.jpg
Or even Captain Planet
https://s22.postimg.org/4dz5aa1dt/four_elements_1024x568.jpg
Or even Captain Planet
I went over it on another similar post. The "'four" elements you talk about don't even exist as a whole. Greek elements were 5, the 4 you mentioned and ether (soul, heart, basically anything that can not be touched) . The Asian (chinese and Japanese and such, have similar meaning but slight difference between them) were 7 the four you mentioned plus Wood, Metal and Lightning/Thunder/Storm which derived from the ying-yang that couldn't be touched (that basically was dark/light) . So the 4 elements you talk about where just the common factor when the cultures crashed.
My issue is more about the exclusion of Air and Earth. How do you call her "Elementalist" and don't even have the four elements that almost all cultures agree on? If they had Earth, Fire, Wind, Water and then put in Light and Darkness to make 6, I'd be okay with it.
Hey as long as she has at least one of them is called elementalist. Perhaps she hasn't mastered the other 2 yet? The avatar didn't learn fire until the last 15 episodes or so xD
Elements are water, earth, wind, fire, and spirit actually. I may have missed some.
There's a pretty wide disagreement between cultures over what were considered elements and what weren't.
Mostly because none of them are elements (whoops).
Lux should be tossing around quarks, electrons, photons, and gluons.