A playing card is torn up and reformed before their eyes !
You show 4 torn pieces of the same card, which you place on the table or in a spectators hand. You say that last night in a bar, someone tried to show you a magic trick, and here's the result: 4 torn-up pieces of a card.
You hold the card box and place it very quickly over the deck of cards that you hold in your hands. A second later, the pieces of the torn-up card have reconnected themselves.
The viewer is free to inspect and verify the result: the card is completely reconnected.