"Oh! Bloody calm down now. It's just a spell, maybe dark, just to temporarily disable your speech. You know, my past few guests had a habit of begging and pleading, and it drove me nuts. As much as it's still possible. Well, you do have another use for me. It's simple really, you just have to return to Malfoy Manor. Why, you'd ask?" Hermione pointed towards the bubbling container, "See there? that's Nitroglycerin. What's that? Let's just say it's something that can blow up your precious Lord's minions. I'll probably just use you as a carrier. How? I'm glad you asked. I've magically duplicated your main arteries and veins and they're still not pumping anything. I just have to pump in some Nitroglycerin, keep it in stasis below 50 degree Celsius, dissolved in acetone. I'll also add some Gunpowder in stasis inside your body. Once you're at the Manor, I've set the trigger, so as soon as you have a Crucio or Avada Kedavra thrown at you, the acetone will vanish, and a warming charm will warm your duplicated arteries and veins to above 50 degrees... And kaboom!! End of story. Awww... Don't look so gloomy, I'm not too cruel, you won't remember a thing. Just like past few days. You want to know how? Here..."OBLIVIATE'"