Ultimate Invisible Deck by Sway Liu and JT Magic

Effect

The magician introduces an invisible deck and hands it to a spectator to shuffle. The spectator freely selects any card, names it aloud, and places it back into the invisible deck, which is then returned to its invisible case.

The magician then takes an empty paper bag and invites the spectator to throw the invisible deck inside. In an instant, a real deck appears in the bag.

When the deck is removed, it is seen to be blank: a plain white card box containing playing cards that are blank on both sides. The only exception is one real playing card-the exact card the spectator freely named.