The magician shows 6 cards to the audience.

Each card has different pictures.

An audience chooses a card and puts it on the table face down.

Thus, the magician does not know which card has been selected by the audience.

The magician, then, put 6 dice into a box randomly.

The 6 faces of the dice have 6 pictures that are the same as the 6 cards.

Then, the magician closes the box.

The magician holds and waves the box.

Magically, all 6 dice with the same picture face up.

And, the picture is the same as the audience-selected card.

Demo: