This is a very easy triumph to perform when you stand up.
The deck is shuffled. The spectator cuts freely anywhere in the deck, and gets the next card.
The cards is shuffled and lost in the spectators half.
Half of the deck is now turned face up and shuffled into the deck.
Then suddenly all the cards are face down, except for the selection.
A very clean way to force a card
A classic triumph routine you also can do without any table, here with a different handling