DVD en Anglais.
After a quick shuffle of your blue deck of cards, you turn the deck face up and spread through the cards allowing the spec to choose a card from the face up spread. You tell them to check out the card and make sure it is totally normal. You then have them fold up the card into quarters and sign their name ALL over the face of the card. No denying this is THEIR card. Then you take their card, set the deck aside and tear out a corner of the card for them to keep as a receipt of their card with their signature. Plain as day you have 3/4 of THEIR blue back signed card in your hand. Now here's the crazy part: At this point with no switches or funny moves you turn the 3/4 card so the back is facing them and VISUALLY change the back from BLUE to RED one piece at a time! You can even stop after each piece and show that it is indeed THEIR card with their signature and all. Show the back, show the face, show it all. Want to hear something even more amazing? Directly after the change you hand the 3/4 card right to the spec, no funny moves, no nothing you just hand it right to them. They can even grab it right out of your hands (see demo). They hold their "receipt" up to the 3/4 card and see that everything matches! The tear matches, the signature matches, even the back design matches! This is ALL examinable, no joke. They can even keep the card as a souvenir of this miracle that happened right in front of their eyes. Want options? Well here's a twist, If you choose you can fold up the 3/4 blue card and put it into their hand so that the magic actually happens while the 3/4 piece AND the torn out "receipt" are in the specs hands. Don't believe it? Well believe this: Once the card is in their hands you never touch them again and everything is examinable immediately. Wait, what's that you say? Wouldn't it be cool if you could fully restore the final blue piece onto the 3/4 red card? Why, yes that would be cool.