Predi-perfect by Leandro Ferraro

This is a pretty perfect prediction.

You have a deck of cards and show it is well mixed. A spectator is asked to deal the cards face up one at the time and he may stop WERE EVER HE WANTS.
You show that when he dealt more or less it definately would be an indifferent outcame.

Yet... reveal your prediction to show a Perfect predicion.

You will receive a ready to go special deck of cards + gimmicks. The instruction video is in Dutch (!) but very easy to follow and wouldn't be a problem if you don't understand the language.