User blog comment:HS664/Chaos Energy and You/@comment-5842470-20140511174112

I view Chaos mostly the same as game canon, except you don't need an emerald for usage. It's relatively rare, compared to other powers like fire and ice. I also put it in a category of learnable abilities, but it takes much more effort than those who just get born with a natural tendancy for using it. There are also other artifacts/crystals.etc. that can house chaos abilities, and those can be used for making elemental weaponry, or via certain means, be implanted to imbue the abilities.

In short, I'm perfectly fine with it, so long as it doesn't make you some all-powerful demigod, without a legitimate reason. Also, it's not "do everything" magic. No "Chaos Swissroll", "Chaos Ultimate Blast", etc.