As former healer and current hospital director, Victor was certainly glad that the rules did consist of non-violence. If it was, he would certainly be against dueling at all. But as it were, they were to show skill, not force. He was also glad that he had an opponent that wasn't some twenty year old, not that he thought ill of the person overseeing their match. He felt that it would be best to start with a more predictable spell. Wait to do something creative until he saw some spell work from his opponent. "Expelliarmus" That was certainly something a beginner would likely do, so he hoped that it would be slightly confusing for a hospital director to start off with.