This is an absolutely amazing trick. Harry Lorayne has described many similar tricks in his fantastic books. My opinion: This is one of the best openers when someone asks you on a festive occasion: "Hey, you're a magician, show me a miracle with this deck of cards." And you receive an old and greasy deck of cards. Demonstrate this miracle, and then continue with your own Bycile deck of cards, which I, as a 68-year-old magician, always carry in my pockets, every day. Bravo for this post and... my life ist magic... sorry for my poor englisch, I'm from Switzerland André
I love your enthusiasm and drive for magic and the magic community and I’m so happy that you took your time and wrote the comment. Your English is not bad at all! Thank you.