Free magic trick Down Under

This is an
easy to do FREE Magic Trick .The performer asks a spectator
to tell him how to mix up a packet of cards, following the
spectator's instructions but no matter how much they're
mixed up, the cards end up in the same order as at the
beginning of the trick.
Before you start the trick :
Take a full suit of 13 (any one) and lay them down on the
table, face up, in numerical order.
Tell a spectator to note the order of the cards. Square them up
and hold them face down in your left hand.

Secret of this FREE Magic Trick
: Having first shown the
spectator the suit of cards in numerical order you then take
back into your hand, keeping them face down ....
You say: 'You must tell me exactly how to deal these cards so
we can be sure they're thoroughly mixed' Explain that the
instructions you need from them are: 'DOWN' and 'UNDER'.
When they say 'DOWN' you'll put one card on the table (face
down) and when they say 'UNDER' you'll take the next card from
the pile, put it under the first one (on the pile) and then
deal both of them together on the table (again face down).
You then follow their instructions and deal the cards exactly
as they say into a pile on the table.
You square up the pile and then suggest that to be sure the
cards are really well mixed, you do it once more.
Once again you follow their instructions and deal the cards as
they say into a pile.
When you pick up the pile and turn them face up and spread them
out in a line all 13 of them will be in the same numerical
order as at the beginning of the trick!

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