With a few cards, you can accomplish amazing things! Take a small packet of cards and make them seem as if they are constantly changing without introducing any new cards to the packet...

Dominique Duvivier's Royal Flush of Hearts from Mayette Magie Moderne

The four aces magically change into four aces of the same suit; then one of them turns into king; and then all of them turn into a royal flush (except the ten is missing). Suddenly, each of the royal-flush cards are shown to have different, colorful back designs...

Nervous Breakdown from Mayette Magie Moderne

The magician shows a small plastic wallet. He explains that one side of the wallet are four kings, the other side is a prediction card. The spectator is asked to choose any king. The kings and prediction card are removed and placed on the table. With absolutely no sleight of hand, the kings are spread to show the reversed king is the one chosen.

Dominique Duvivier's Inside-Out Mind from Mayette Magie Moderne

Dominique Duvivier does it again with his mind twisting effects. This time, a prediction card proves to be anything but predictable, and the cards in his hand seem to change from four ten cards to a full house of spades- right before your eyes!