Enemy wizards

I had an odd thought. There's this whole great material combination system, but only the PC is able to take advantage of it. I think it would be pretty cool if enemy wizards could spawn with random combination spells. Of course, their spells would have to be toned down a bit (otherwise one shot of C-rank Noxious Spores could take out the PC). It should add a lot of replayability and unpredictability to the game, as well as a nice source of inspiration for the player's own spells. Though I'm not sure how huge of a pain it would be to implement something like this, and then make sure there's nothing bugged about any spell combinations.

Some other ideas: enemy wizards could be made to always drop a material from the spell it used. An enemy wizard could be the only source of higher-than-A rank materials.