You know that Ken's name is synonymous with good commercial magic, and this is no exception. Novel card discoveries are always valuable. The following is certainly novel and has a strong extra climax when everything appears to be over. It is extremely easy to both prepare and perform and can be done at the drop of a hat with a borrowed deck.
A deck is examined and shuffled, then one card is selected and left face down on the table. The magician removes a square of paper from his pocket, a square covered on both sides with letters. This square is torn up into sixteen pieces and when laid out in a line, they are seen to spell out the name of a card, for example THE ACE OF DIAMONDS. The card is turned over and proves to be the Ace of Diamonds. The spectator is then asked to turn over each letter. Now a new message is spelled out: THANKS FOR THE HELP!
Easy to do, no special apparatus required, just a deck of cards and a piece of paper. Any other message can be revealed and it can be done in ANY LANGUAGE. In manuscript form.