This is a wonderful impromptu effect.
The only thing I do miss in the explanation is the "2. move" as you call it and how to make it invisible. It's quite hard to perform the move without the spectator seeing it.
However, this trick is now added to my favourites!
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<Jargge>
d{>_<}b
<BeastUK>
How did you get that backwards b?
<Anonymous>
its called d
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