[He almost preens for a few moments before answering the question.]

In mine, it's a science based around transmuting matter into new forms. It's all got to follow equivalent exchange; you can't get something without giving something of equal value up in return. And it works on anything, so long as you've got the right sort of transmutation circle to focus the energy and the right skills. Even plants and animals.

Or humans. But that's forbidden by more than just laws.

Most people'll just use it to fix broken vases or buildings or things like that.