The card changes behind glass. With a quick wipe of the cloth the card changes and you know this will impress people.
You may like to combine this with the card through window tricks made famous by TV magicians. You could throw a card through the window as part of a predication and get the card wrong. They will be impressed that the card went through the window but even more impressed when you change it to their card.
This trick will need a gimmick and does break the rules at Pubtricks.com. You will need to make a small purchase at a magic trick store but the item you buy will let you do a stack more tricks. I cannot say anymore without exposing the trick but the purchase is just a few dollars.
Remember, if you buy this trick and 2 others you can pick a fourth trick for free.
This trick is suitable for intermediates.