I'd've been all right if 'e'd used magic, but 'e come at me with an axe. I ...sometimes even when you're all prepared for a thing, you're not.

[She pinches the bridge of her nose tiredly.]

Next time I volunteer for owt like that make sure I'm tied down. Anyway. What we're talking 'ere is being able to feed off the literal process of entropy, aren't we? I know a way to bottle the reverse - the time lords can do it, they can transfer life between one and another. So I'd guess I'd 'ave to start with a distillation chamber and work from there.