He narrows it down

After some looking around, he had narrowed his search down to a handful of potential candidates.

The first was Yang Xiao-Long of team RWBY. She was known for her boisterous and flamboyant nature, and she had an incredible body. She would definitely draw in a crowd - and Silvanus definitely wanted to mess with her with hypnosis.

The next was Pyrrha Nikos of team JNPR. She was already famous and attractive, but she didn't exactly have a personality fit for the stage. For her it was all sexiness and name recognition.

After this was Cinder Fall of team CRME. Not famous, very attractive, and with a stuck up attitude that would make her an interesting subject.

Then there was Glynda Goodwitch herself. Not a student, but her strict and professional demeanor, beauty, and general fame as a huntress and instructor would make her a good candidate as well.