The Man Who Knows (Gimmicks and Online Instructions) by Liam Montier, Matt Lingard and Kaymar Magic
First, you bring out an envelope, which is handed to a spectator.
Next, five gorgeous full color mini-postcards are shown, each featuring a classic magician poster. They are all placed into regular envelopes, which are handed to another spectator. They shuffle and freely choose any one of them.
In the meantime, you show a shuffled deck of cards, and deal through them. The chosen envelope is placed into the pack by the spectator at any point. The card next to the envelope is removed.
The spectator's envelope is opened - they chose Alexander, The Man Who Knows!
You have them open the prediction envelope that has been visible from the beginning - and it's an Alexander poster! However, this one is slightly different - it features a crystal ball with a card inside... it's the Four of Clubs!
Turning over the chosen card from the pack, it is of course the Four of Clubs!
CUSTOM PRINTED MINI POSTCARDS, ENVELOPES, POSTER AND WRITTEN INSTRUCTIONS AND STREAMING VIDEO INSTRUCTIONS INCLUDED
THE ENVELOPES ARE TOTALLY REGULAR
USE ANY DECK OF CARDS!