Knowing the impossible is a way to know the spectator's card behind your back without seeing it.
The effect is that the spectator shuffles the playing cards and chooses any card and then loses it himself into the deck and then picks five cards and one of these is his card. Now the magician takes all five cards behind his back and is able to reveal the spectator's card. You can fool magicians with this trick!
In this trick you can use any normal borrowed shuffled deck
No peek
No force
No gimmick
No marked cards
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