At this rate, getting yourself out of that deal is going to be the least of your worries. [Shun's tone is unmistakably cold and unforgiving, and the timing of the remark is rather pointedly after yet another of the man's remarks on how little he regrets using children for his own ends.]

But I'll take any other information you have about the spell, book or demon if you want to put that off for a little longer.