Rel Change by Michael Brewer and Vanishing Inc.

Michael Brewer's REL Change is a change of a single playing card that happens in a split second. One card seems to instantly melt into another. The entire surface of the card just seems to change. It's what real magic would look like. 

What's fantastic about this move (which isn't overly difficult) is that you can use it to change cards, bills, and other objects. That's right: when you learn this move, you will have many different effects and applications at your disposal. 

"I have to say that this an absolutely stunning change, and I was completely fooled to boot! Just wonderful!" 
- Jack Carpenter