The Shapeshifter trick transfer is a color change, meaning that the viewer is displayed one card but it instantly changes into another card. It is a very cool illusion. I remember freaking out the first time I saw it done live.
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NOTE: this isn’t a trick in itself. It is a card sleight of hand technique which you can incorporate into your other card tricks to make them look cooler.
ShapeShifter Trick by David Blaine
You will want to practice it a lot before you can confidently perform it in front of an audience. It takes time to get a feel for the specific quantity of pressure to put on the cards.