Nick glanced sideways at Proffesor Calvert, did she really have to say that in front of Matt? It reminded Nick that he was still a teenager, when in fact he felt so much older. His skills in the dark arts were unrivaled by almost all his age and most older, it was an unnatural obsession which he had. Nick had considered joining the Death Eaters at one point but the servitude he would have to offer did not appeal to him. He was his own man there was no reason for him to bow down to anyone, Tom Riddle had been of a similar mindset and look where he was. Bonnie Calvert, although she probably did not know it was no match for him when it came to duels. Nick was a very charming, good looking boy most of the time but when threatned, or angry he was a totally diffrent person. A ruthless, aggressive person who was capable of killing a man with one stroke of his wand.
Nick smiled a little as she stated that the fact he knew these spells was a bad omen, if only she knew the half of it. It was not the fact that he knew the unforgivable curses which was frightening. It was the fact that Nick was so well versed and ruthless in administering them. Crucio could only work if one really wanted to cause pain and suffering, probably the reason why Sierra's was simply brushed aside by Matt. Yet Nick's was as strong as it could be, indeed he was perhaps a match for Bellatrix when it came to the Cruciatas Curse. He always found that he imagined filth before him as he cast it, Vampires or Werewolves that needed sorted. His eyes lay on Proffesor Calvert for a moment as she cast her spell.
It was nothing flashy, nothing dangerous and Nick felt a sort of anger over come him, what was she afraid to perform proper magic infront of them "Use your wand with feeling Proffesor or dont use it at all!" He hissed, such a disrespectfull way to speak to a superior but it had to be said, they were in a duel against a death eater, not having a fun at duelling club.