Organash's coin of madness

A coin that is coveted by those filled with it's creator Organash's greed, this artifact can multiply gold, but if this corrupted gold is given to another person that person will become mad with greed and envious of others wealth. The coin as long as it is one's possession causes a slow effect of poisoning the wielders mind with madness, making it hard for the wielder to ever part with the coin. Many wielders are either killed for the coin or die having isolated themselves with the riches the coin bestowed upon them.