Show the 4 Kings. The spectator selects one, and three random cards are placed on top of it. Random cards are also placed on top of each of the remaining Kings. All of the cards are assembled together. When spread, the Kings no longer appear in the group of cards - they've reassembled into their own pile on the table!
Then THAT pile of Kings totally vanishes. Where did they go? They're back with the rest of the cards!
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