Effect: Four blue-back cards are shown. One at a time each card - the Ace, Two, Three, and Four of Diamonds - turn face up. Their backs then change to red and then one at a time the backs change back to blue. Finally, the cards change to four Fours of Diamonds.
1st edition 1975 in Paul Diamond Presents Magical Masterpieces #2, updated 2018, PDF 15 pages.
word count: 2932 which is equivalent to 11 standard pages of text