Magic Limits

Magic, the working of miracles! Well, not exactly. Nanites work miracles every day. But that's not good enough for everyone. For them, there's extra planar power waiting to be grasped at.

The reality of the situation is that Earth's reality is just one layer of a great big sandwich of probabilities and energy states. The sandwich isn't even layered neatly, so a lot of layers are all sprawled on top of one another in contact in different places. Where these layers make contact, energy can flow one way or the other. The physicists were not wrong. Things cannot be created or destroyed, neither can energy, but the world is not a closed system.