[ He glares weakly at the back of Fay's head, before moving to pick up one of the few undamaged pieces in the place. Which just happened to be the knife which, in his mind, was the cause of all this in the first place. ]

Depends on what you mean with setting it off. I just need to do this- [ He flicked his wrist, feeling that weird sensation of some kind of force moving trough him, focusing on where his hand made contact with the knife before leaving him, causing a wave of energy to crash into an already pretty demolished wall on the other side of the room. ] And... well, you can see for yourself.

[ His cheeks are flushed with colour and he puts the knife down with an embarrassed grimace, his eyes purposefully avoiding to look anywhere in Fay's direction. ]