Five cards with zombie faces with different features.
On the back, these cards are numbered from 1 to 5. The spectator put his finger on top of any card he wants. It's a totally free choice. That done, the magician asks him to walk the amount of cards he is marking on the card he chose. The spectator can go back and forth, walk in any direction, just not jump from one end to the other. Naturally it will stop on a letter. The choice seems fair enough. The card is flipped over and matches exactly the same picture of a prediction card that has been inside an envelope the entire time since the start of the trick.
A super easy spell that you can learn and perform in a few minutes. An old principle reinvigorated and with a new and current system.