The Effect: The magician asks a spectator to touch any cards. All of the cards are different and no forces at all. Let's say the spectator touches the Six of Hearts. The magician then state that he will use this value of his selection to find another card. The deck is turned face down and the magician deals 6 card off the top of the deck. The 6th card is turned face up and it is a Eight of Diamond. 8 more cards are dealt onto the table. The 8th card is turned face up and it is the Four of Spade.
The magician then asks a spectator to total up the three card face up on the table. In this case, the spectator answer will be 18. The magician then asks the spectator to turn over the first card that he freely selected. On the back of the card there is a message: "Turn the box over!". On the other side of the box, in bold maker, it is written 18! Killer self working effect!