This is really interesting opener that really catches people off guard. I love these kinds of effects where the audience is expecting one thing but you hit them hard with something else. The method here is really unique as well; those of you who love sleight of hand might find some idea that you can apply from this technique.
https://www.youtube.com/watch?v=OskBD72gbl0
https://www.youtube.com/watch?v=OskBD72gbl0