This is a classic card routine! You start by telling your spectator a funny story of how you were duped into buying some cheap playing cards and when you got them home you realised that they were blank on both sides, the cards are shown both front and back to be blank on both sides. You then magically print a face of a card and then a back and then you riffle down the deck and all the cards are seen to be printed back and front. To finish you give the cards a cut and once again they all turn blank! Super visual magic
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