Are you still accepting characters?
Also, to basically make sure I've read through the entire document correctly(it's 1:21am at the moment of writing this post), basically for magic.
1)Follows physics of the game
2)Not overpowered
3)No such thing as i-frames(I like this way of saying invincibility)
4)If can not be explained through ingame physics, can not be used
5)Has a limit. No total defense, or total attack. Nothing unstoppable.