- It does not require great dexterity and is logically structured

this course will take the novice to the advanced professional standard with ease

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"Ben Seidman is a genius

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The Vault - Shadow Window | Sultan Orazaly - (Download) Severson - It does not requireYou put your finger through a large square cut out of a blue backed playing card. Instantly the card turns red and the hole you just saw fingers go through somehow no longer exists. The black hole is now just a piece of black tape that is peeled off the card. Easy to build and fun to perform. A real visual puzzle! Download it today.