Everything looks mostly fine so far, the main thing is that his powers just need more concrete limitations, specifications, and maybe some energy costs. Also I'm wondering how one uses energy on energy, that needs to be explained. Stronger spells like reality warping or teleportation should have some significant costs. And I have to remind you that in this universe using lethal magic in cold-blood usually doesn't end well with the spellcaster, so keep that in mind. 

Everything else looks good though. 

And Poly and Yog being old hands at this thread they get the express lane in.