Oh, I'm not a saint. I kill people and take their powers.

[ It's said utterly calmly, and he picks up his cup again and goes back to sipping it, even though it's getting cold, keeping his hands closed tightly around it as he warms it through. ]

But I'm not here to do you a favour, and if I were, I'd want something in return. That's not to say you don't have anything I want.

[ He takes another sip. ]

Besides, there's something to be said for learning about your ability naturally. How badly do you want to know?