Description: A standard deck of playing cards, but each back (not face!) is a different color. My immediate thought was that this would work as a way to mark the cards, but as you can see from the picture below, the color change between cards is very gradual, and the cards are mixed up compared to the colors.
Number of decks: 1
Open?: Yes
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| A gradual transition between colors |
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| The same cards as above in the same order. |
