Buz, I don't understand why you're so intent on proving that God follows natural laws. Surely, if he could only follow natural laws, He wouldn't be a
supernatural being. As such, nothing He did could be considered
supernatural.
Surely if God is all powerful, He can do things outwith natural laws? This means that you're OP is trying to prove that God isn't all powerful.
As a Christian I believe that God is all powerful, but as a scientist I accept the laws of thermodynamics for
natural systems, since they are only intended to describe natural systems. That means I have to accept that God is outwith the natural laws so it is pointless to try to ascribe the properties of natural laws to His actions.
By all means continue your attempts to prove that God is not all powerful and that His actions are forced to follow natural laws, but you then lose any claim that the
supernatural follows natural laws because you'll have succeeded in proving that there is nothing supernatural about God at all.
I have to say that I'm astounded that you haven't realised just what you are trying to argue, you haven't thought through the implications of your theory. The bottom line is that if you "prove" your theory, you've disproved it - not a very promising line to take.