Traits

Has extreme differences, and certain specials are only avalible on one side. For instance, only one side of the body changes seasonaly, different mutations on each side, corrupted version would not require additional mythical traits for certain traits IE: One feathered wing on one side, two leather on other

The host has multiple heads (Max 3) and they all have their own personalities/mind.

Hair that is made from the spirits of deceased creatures that the host has killed.
Some say if you gaze upon it too long you would start to see the ghosts of your past.