hey all how's everyone doing? I was hoping if anyone can point me I the right direction here. Does anyone know where I can learn as much as I can in the magicians force and a guide to marked cards. I found a book for marked cards called hidden in plain sight maybe someone here who owns it can tell me if its worth the read. Basically I want to perform an effect where I can hand the deck to a spectator and have them shuffle the deck as much as they want. I then have them eliminate packets of cards until they are left with one card. I then pull out a card from my pocket which is the same as the card that they were left with. I've been playing around with this for the past days and found I great way to achieve this but as I am unfamiliar with the 2 methods mentioned in the title I hit a block for now. Any help would be greatly appreciated.