Step 5: Play!
I have found that the best way to shuffle the numbered magnets is to stack them all face up and then slide groups of magnets off of the top and set them down, face up. Consecutive groups of magnets are then taken off of the top of the original set and placed face up on top of the group that was already removed. Repeat this process several times.
Until the thief is first introduced into the game, it is best to keep it in the box instead of on the desert space because the magnet will pull it off of the desert space at the slightest bump.