Never the Wrong Card
Effect: The magician has you pick a card, and then has you shuffle Then the magician picks out a bad luck card and tells you to keep it away from the deck. Next, he (magician) shows you 4 cards and lays them on the table. Then he shows you the cards 1 more time and then has you hold out your hand. He (magician) takes off the top 3 cards (showing each one individually) and has you look at the last card asking if it's yours. (and of course, it is!)
A normal deck of cards is shuffled and a person from the crowd tells the person performing the trick to stop pulling the cards back towards them, the card is then shown to the person and the deck is put back together and shuffled. The person performing then goes through and selects the correct card.
The way to do this is to get the person from the crowd to shuffle the cards, when they have done this you take the deck of cards and sneak a look at the bottom card. Then you get the person from the crowd to tell you to stop pulling the cards back towards you. You do this by having the bottom of the deck at the front of your palm and slowly pulling the cards towards the top of your hand. When your told to stop pulling the cards back you simply grab the bottom card ( which you've previously looked at ) with your thumb and slide the cards towards you making sure that the bottom card is the card that you show the person from the crowd. To make the card trick effective never look at the deck of cards after you've sneaked a look at the bottom card.
A good variation is to after you've peaked at the bottom card, put the deck down and write down what the card is on a piece of paper and cover it up, telling the person from the crowd not to look at it until after, the person has gone through the deck.