A classic ace assembly. The magician places 4 aces face up on the table. He then takes three indifferent cards and places them on top of each ace. Next he picks up the pile with the ace of diamonds in it and mixes them up. Now they are ALL indifferent cards! The ace has vanished! This is repeated with the clubs and the hearts! The magician then turns to the pile with the ace of spades, which has not been touched and turns over the indifferent cards. They are the aces!
This does require a gimmick that is very easy to make as well as purchased for low cost.
This trick is suitable for all levels.