Setting up your free magic trick
Count out any 21 cards from a normal deck of playing cards.
Deal out 3 piles of cards
Deal out the cards in 3 piles one at a time from left to right.
Ask your audience member to pick one card. Tell them not touch it or reveal it to you.
Ask them to just point out the pile containing their card.
Pick up the 3 piles one at a time placing the pile with their card in the middle
of the stack. Deal out the cards again and again ask them to point out the pile containing their card.
Stack the piles with the pile holding their card in the middle of your card stack again.
Repeat this on more time and then deal the cards out and their card will be the 11th card you deal out.