Well, shit. Heine can't help him with it either, but he can always call on the other professor who's chaperoning them, or run to the Infirmary and pick something up. Hopefully.

He motions Jade to stand slightly aside. Heine raises a hand once he's out of the way and casts Fiendfyre with a soft murmur of the incantation. Immediately, the enchanted flames appear on the ground in a neat circle, casting flickering light on the walls of the room.

"Guess you'll need a way to suppress it." Depending on the task, of course, but suppression is a good start.