"It's not for practical use. It's a test circle, of sorts - I can draw them on paper but I've got a sense now of whether something is workable if I look at it in the actual material. And also this way I can take a picture and send it to other witches and they'll take me a little more seriously than if I just send them sketches. But the spell is for immortality, like I gave Kas - the kind witches have. To put on humans, and when I have that down I'll work on a bear version."