I added "advanced casting" rules.  Dancing flower, your roll is correct (and was also successful).  HangedMan, I'm going to say impossible to pick up the change by scent.  You would have a better chance to hear/see Xavril doing something to it.<br/><br/>Also, Richard Blackthorne is Hufflepuff, not Gryffindor.  Richard Summerby, the one who was leading cheers, was Gryffindor.