I think he is inclined to accept good sense.

[That's not actually an answer, Sypha, but good job nimbly deflecting that one.]

Not exactly. Fundamentally, yes, it only needs me, but sometimes I use other things, as tricks or as focuses. And I can make magic stick to things, which makes them a little magic themselves. But I don't need...eye of newt and hair of cat and a bubbling cauldron, or anything like that.