What would a chaos avatar inherent/learn?

Hear rumors of there being a dark avatar as like the twin of the main avatar. I prefer to like name them based on chaos/ order because both spirits are necessary for the world but are clearly biased in their pursuit of dominating the world.

We know the main avatar inherents the four elements and energy. But hypothetically if seven heavens were to be the origin of the chaos avatar what would they inherent?

If they do that hope they don't do an elements vs elements because that would be cliche. Part of me kinda wishes for them to have abilities commonly associated with spirits like shape shifting, possession , and ect.