As If by Magic by Lewis Jones.

Description

Card effects, including —

• Box Number. All the choices (colour, suit, value) come from the spectator, but she ends up with the lone card in the card-box
• Ding Dong. How to remember cards without memorising them.
• Copy Cat. You genuinely have no idea which card someone thought of, or where it is. Yet you cause the chosen card to appear in his hand.
• The Devil’s Triangle. Combine three people’ s birthdays to lead you to the target card.
• Second Strike. A spectator chooses any card from a face-up deck: it’s the only card with a different back.
• You Think, I Think. You read one spectator’ s mind, and another spectator reads yours.
• Wish list. A spectator uses her birth date to find the object she wants most on her wish list.
• The Three Magi. Three spectators become magicians, and do a trick or you.
• Memory Deck. The much-requested memory system you can learn in five minutes.

Plus two bonus non-card routines —

Word for word. Someone writes any word on a business card: you do the same. Guess what?
Birthday Squared. The magic square that produces a spectator’s birthday