Oddzoff by Kevin Parker
Who can predict where in the deck someone will shuffle their card, to the specifics, e.g. a certain number of cards down into the deck Even creepier would be if it relates to something you uttered beforehand as if it made it happen.

Imagine this. You mention a scenario where they are 2 or 3 off guessing the amount of candies in a jar. Then the spectator thinks of any card, shuffles the deck they're holding, then finds that card 2 or 3 off from your written prediction just like the candy scenario. The only other outcomes would be if it's just 1 off or dead-on, but you're covered there too because the cardboard piece contains a small '1' for '1-off' in the corner on the back of it. The best thing is, the method guarantees that they'll never find their card more than 3 off, which you've preempted beforehand. This is a 100% full-proof system that does not rely on certain conditions for it to work. It cannot fail. It is one of the closest things to real magic you can do. This is Oddzoff by Kevin Parker.

• Self working
• You never touch the deck
• No trick decks/stacks
• Instant reset
• No reliance on conditions
• Works every single time