For this trick, you will obviously need a deck of playing cards. It can be any deck, as long as it has 52 cards in it (after taking out the two jokers). You are looking for the stiffest cards you can find, so it is often good to show this trick with a fresh deck, but this is completely not required at all. Just the stiffer, the better.
Introduce yourself, and show your audience that you are using a full, regulation deck that has been shuffled.