From what I've heard, the creature's consumption of our energy doesn't have to do with the wishes. Only the meter does, and the more full it is, the more things are granted. On the one hand, if that energy is expelled, it could cause problems... but on the other hand, if it finds its way to the meter, then that would be highly beneficial. I'm not sure how symbiotic the relationship is.

[ that last bit though, he nods, brow creasing. ]

... That's always a possibility. [ don't like that! he wants his wish, of course, but... there are others that are a literal matter of life and death. ] Lup seems to think that it'll work, though. So do some of the more cynical of the group - it's just a matter of dealing with the creature, first.