I sometimes find it awkward to discuss elements in regards to Druidism. There are Druids who use the four classical elements. There could be different reasons for it. It works quite nicely in OBOD, I guess, or they could be interested in Hellenic culture. Druids influenced by CR tend to view things differently though. I would generally consider the elements to be the same as the realms. They are interrelated, after all. If the elements are what make up the world, then then it makes sense to view the realms, which make up the world, as the elements.
Sky = Fire
Sea = Water
Land = er…Land.
At this point you say, “But Grey! What about air?! Surely your ancestors understood the importance of air!”
To that I say – I don’t know! I think Sky adequately covers air as well. It is funny to think about air taking a back seat to earth, fire, and water. Life could not exist without it, just as much as it couldn’t exist without the others. It’s something I’ve always been a little curious about…
Any other Druids and/or Recons want to take a stab at this?