They'd be attacked?

Marie just stood there, blinking and watching as the desk transformed into a chainsaw. She silently spoke up, after raising her hand..."Well, that's the purpose of this class, to be trained in order that if in case of an emergency we need some specific artifact we don't have around..." Kinda. She was just too shocked to think about an attack or what was the real reason the professor had done such transformation.

And all that could be seen around them was silence, shock if possible.