[That doesn't actually explain anything to him—putting a word on it that just isn't "magic" isn't an explanation! How can he learn!! But he won't nitpick it to death... this time.]

Well, it's as helpful as any torch, although it doesn't go out unless I want it to. [Or he gets the shit kicked out of him or something, but that hasn't happened yet here.] It's not much compared to something like healing, but a light is useful.