The invisible deck card trick is a very simple, useful and perhaps the coolest one amongst all the tricks ever invented. This particular trick can surprise the spectator more than any other trick. To get started you have all the cards placed inside the deck and you ask the spectator to name any card. Besides, you also tell the spectator that whatever card he will name, it will be placed inside the deck in an upside down position. This may seem to be impossible but if you follow certain directions it always works and proves to be mind blowing for the audience . The important thing to remember in this trick is that if the spectator names an odd number you pull the deck out from the even side and vice versa.
Arrange all the cards in the deck in such a way that one side of the deck should be having the even cards and the other should have odd cards.
While making odd and even arrangements remember that the Queen is considered as 12 and Jack is considered as 11. Besides, the red Kings are odd and the black Kings are even.
Now as you make the arrangements, put the two successive cards with backs attached in such a way that the sum of an odd and an even card together make a total of 13, i.e. Ace to be paired with Queen, 2 to be paired with Jack and so on, King won't be paired at all as it's itself is 13. Since the cards have rough backs so they won’t disperse if you count them from either side.
The next thing you should remember while pairing is that hearts are paired with spades as they both look very much the same while the diamonds are paired with clubs.
Once you are done with paired arrangement of the cards ask the spectator to name any card that he can possibly think of and tell him that his card will be placed upside down in the deck.
If the spectator has thought for 9 of diamonds, then you mentally figure out that it takes 4 to add into 9 for making 13. Since 9 is an odd number, so you pull out the deck from even side.
Counting from the even side, when you will finally reach 4 of clubs and flip it over the spectator will be surprised to see 9 of diamonds.