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You Know (UNO)
  • You Know (UNO)


    A Baffling Demonstration of Foresight With UNO Cards




      You Know is a mind-boggling demonstration of mentalism using regular UNO Cards. This powerful prediction effect is so FAIR, so DIRECT and so utterly baffling. David Jonathan has dusted off a long-forgotten and criminally underused principle, and modernized it with delightful new twists to create an unbelievable hands-off prediction that is INCREDIBLY EASY to perform!


      The Effect:
      After briefly bringing attention to an envelope in your pocket, you introduce a pack of UNO cards. A participant then names one of the four colors in the deck as their target color. They then take all the cards and genuinely shuffle them into a truly random order. Looking through the shuffled deck, they remove the first three cards of their target color that they come to. The numbers on these cards are added together to arrive at a total. You then remove the envelope from your pocket to show one number was written on it, which matches their total!


      But that’s not all!


      You now open the envelope to show that you also correctly predicted the COLOR and the EXACT THREE NUMBERS they had arrived at!


      NO Gimmicks

      NO Sleight of hands

      Ends Clean

      Nearly self-working!

      You Know is a super fun and unique change of pace from run-of-the-mill card tricks. While this effect was designed for UNO cards, it can be easily adapted to playing cards. You will also learn a variety of extra ideas to incorporate the concepts into other routines like book tests, pin code revelations and more! Download now to learn one of the strongest effects with a pack of UNO cards!




      This is an Instant Download with over 40 minutes of detailed instructions in a streaming / downloadable video, available immediately after purchase.




      "David Jonathan is one of my favorite creators... and this is one of the very BEST effects I’ve reviewed in a long time, and the BEST effect for the money. It’s an absolute steal."
      - Rick Carruth, The Magic Roadshow (FULL REVIEW)


      "This effect is an almost perfect example of a great self-working trick.  It gets my highest recommendation for anyone who loves impactful magic with a theme that suits both adult and children audiences.  10/10!"
      - Alex Hui (Alex Magic Review)


      "I have added this to my repetoire and I expect it to stay there. It is very easy to perform, sleight free and it is impossible to back track.  9/10"
      - Straight Talk Magic Reviews (FULL REVIEW)


      "A perfect close up prediction routine. Easy to learn, yet the outcome is super mind-blowing. No unnecessary procedure, this looks exactly how a prediction should look like!"
      - Miss Katalin (FULL REVIEW)


      "This is my favorite effect of the year."
      - Rob Jacks


      "David Jonathan is a very creative magician.  I never knew you could have such a strong magical effect with a deck of Uno cards."
      - Chinese Magic Reviews (


      "This is a wonderful trick that's a lot of fun!"
      - Magic Orthodoxy (


      "A great cross between mentalism and a multiple prediction card effect... it has a nice hook and the principle is clever and fooling. I give it a solid 5/5."
      - Jeff Ashkettle (aka Poof-Daddy from The Magic Cafe)

      "A five-star prediction effect. Easy to understand and do. Very well taught. Can be done with regular playing cards as well. Everything examinable. Highly recommended."
      - John Dearle

      "Fantastic. A great routine that is well taught and easy to do. David also teaches several great variations and other ways to use the underlying principle, which has always been one of the best and most overlooked principles in magic.  5/5"
      - Eric Meyers


      "What a wonderful effect!  It’s clever, different, and fun!"
      - Jay Ungar


      "Ingeniously crafted.  David Jonathan has an extraordinary expansive mind for conceiving amazing effects!... There are multiple thematic connecting concepts in terms of presentation with many layers of impactful moments!  5/5."
      - Anonymous

      "This trick is easy to do and I have been getting great reactions. I know it is a good trick when people say “how?” Get this, you will not be disappointed."
      - Alan Concha