Spectator magician

This trick needs 10 cards, without joker, which the spectator can shuffle.

Ask the spectator to look at the deck face-up, to choose a card and to remember its position from the top (the side closer to you).

Next, cut the deck after 5 cards and give back the deck to your spectator. They have to swap cards from the top to the bottom corresponding to the position of their card.

Finally, they can do a duck and a deal : they swap a card from the top to the bottom, and they deal one on the table, they swap a card, they deal one... until there is only one card left. It will be the spectator's selected card.