An ordinary pencil

5-card switch

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and virtually anything else that you can write on with a regular Sharpie pen

You can even give it away to a spectator to keep as a souvenir

La Ville Magic Presents Unomathic | Lars La Ville - (Download) Li An ordinary pencilA 2 phase routine with Uno cards. Effect: Phase 1: The magician shows two piles with five uno cards. The cards are shuffled and the spectator helps mixing the cards. The goal is to create five random two digits numbers. The spectator can decide which pile that should be the first and second digit. Now the magician spells to some words, and for each word a card is placed in the bottom. The spectator can decide which pile the magician should start