I haven't actually been to Tumbleweed yet so I wouldn't have seen it. I got here just before the Atlantis insanity happened.
It's based in nature. Some hand gestures, some spoken. Some I can just do mentally. It's nature based. Everything in nature as psychic energies that we draw on. My magic is just part of me, and I can draw on it from elsewhere as well.
So you've been to Tumbleweed. You know what it's like there?