Cut to the Chase
(Instant Download) A knock-out, self-working, hands-off prediction!
Your spectator cuts to two separate positions in a shuffled deck. They then have a COMPLETELY FREE CHOICE of either of the cards they have cut to - no equivoque! You clearly show that, had they chose the other packet, they would have had a completely different card.
Despite the very fair and completely hands-off procedure, you have correctly predicted the chosen card!

No multiple outs or gaffed envelopes!