Effect: Magician shows a slate with six cards face down, clipped three on each side. A spectator is asked to select a card (no force). It is taken out and placed in the holder at the top of the slate, back of the card towards the audience.
When the magician turns the slate around, the audience sees the selected card matches the predicted card written on the slate. All the other cards are seen to be different.
Complete with slate, cards and instructions.