The trailer is clear about what this is. As someone who is relatively "new" (pronounced returning)
to magic later on as an adult, I find that Sankey's tutorials are great. He is a very good teacher
and you can tell he is really enthusiastic about the artform.
This is a clever effect. I
wouldn't use it in closing or as an opener but I think it will find its way into my current routine.
Gimmick is well made.