A prediction envelope is placed down on the table, and then a deck of cards is introduced and shown. The faces are normal, but the backs of the cards each have a word written on, which you explain have all been words used to describe the trick. There’s words like ‘Amazing’ ‘Confounding’ ‘Fantastic’ etc
A spectator freely chooses one of the cards, and one of the words, in the fairest way possible – by simply calling stop as the cards are dealt to the table.
