This piece holds a magic that is called the Golden Key.  It has been described as an "infallible method of attaining success in a lottery".  However, this piece takes it a step further.  This piece doesn't just bring luck in a lottery, it brings luck in wealth regardless of where that wealth is coming from or what it looks like.  You can take this piece to the casino with you and you will walk out a richer person.  You can use this piece while you are laying the lottery and you will become a richer person.  You can use this piece when you are decided which stocks and bonds to buy and you will become a richer person.  Whenever you are doing something in life that revolves around the chance that you could become a richer or more financially stable, this piece is going to help you come out on the winning side of things.