Preparation is not something you're going to be able to do while watched (or within a few seconds). A normal deck is used but prep is required, and any shuffles need to be controlled, i.e. not done by the spectator.
Answered at 08:14pm on July 14th, 2014 by OzFenric (22 karma)
A "spectator's deck?" How often is a spectator carrying a deck around? I think I have used a spectator's deck twice at their hours in 40 years. Stop phishing for the secret this is not real magic yes it is a trick...
Answered at 12:48pm on October 31st, 2016 by sirbrad (-28 karma)
The spectator does indeed get to actually shuffle cards.
Hope this helps.
Answered at 10:44am on July 23rd, 2014 by MatthewJohnson (5 karma)
Hi there! This trick is intended to be performed with a bicycle rider back deck with a small preparation which is meant to be done privately. The cards can be shuffled during the performance though and he explains a way that allows that :)
Answered at 09:58am on July 14th, 2014 by girspiggy (2309 karma)