Switching a playing card can be said to be an essential skill for every magician to possess.
One could achieve a variety of visual effects such as color changes and playing card transpositions, or to secretly switch out a spectator’s cards. The utility move has a very important role and position in the realm of card magic.
However, as one delves deeper, there are almost no card switching techniques that are both visual yet covert at the same time. Even if there were, the difficulty level would be quite high.