I like everything about this concept so far except for a couple things:
The idea that when a creature enters a zone, it automatically warps to a square of your choice within that zone. That's no where near as intuitive as regular Mage Wars is, and it doesn't make sense, flavorwise. I want to be able to use part of my creature's action to move less than five squares, staying within the same zone. Or better yet, remove the zones and squares altogether and just use inches. I also suggested earlier using an "Energy Gauge" instead of an action marker, where using 100% Energy would be the equivalent of a full action. Perhaps one could use two D10's to keep track? And then every time another creature is activated, you move the two D10's to that creature with both 10 faces face-up.
Also, I strongly, STRONGLY suggest you make the miniatures from an inexpensive material, like plastic. One of the things that sets Mage Wars apart from other games in the customizable strategy genre is that it is affordable, and I think that's a big part of the attraction of Mage Wars for many players. If you were to use metal, for instance, I'm rather certain that would effectively bar me from playing.
I'm really excited about this! This is seriously awesome!