Paul Gordon's 52 Factorial self-working killer with a lovely A7-size 5-page booklet!
Here's an EDC (everyday carry) A7-size prediction booklet to keep in your pocket or wallet. The routine is sleight-free but can be made stronger with one standard move. You'll USE this a lot... The spectator shuffles two small bunches of cards from the deck. They are shuffled face up and face down. The multi-prediction booklet reveals multi predictions...and a killer finale!
Online video tutorial.
It may look a bit like Aronson's Shufflebored, but it isn't. It's based on Paul's Carbon Footprints principle from the 90's which was based on Bob Hummer's original ideas.