The ability to change your form, this is rare among Amberites, but prevalent amongst Chaosians. Further, it’s required for anyone to walk The Logrus, so if you see someone slinging around tendrils, you know they can shapeshift if they want to.
There is a large danger with shapeshifting – the risk of losing yourself in the shift. This isn’t much of a concern with minor shifts, but especially when entering Avatar/Demon forms, or shapeshifting a personality. Just watch yourself.