Keep in mind, I did that because I was bored.And the wonderful thing about this RP is we can make stuff as we go along. So, if the core mechanic every gets old, we could also expand on it or add new things. But that could be in a week, a month, or never. That is just how open-ended this RP is.

The use of sphere in my suggestion was almost purely to balance it out. If you could say "Well, I create world wide earthquakes for a thousand years and make all my creatures immune to earthquake" that would be really OP. I don't mind if sphere is an important mechanic or not. I kind of like the idea of sphere management so long as it doesn't become a chore. 

And speaking of game, this is starting to remind me of spore.