This item appears from its description to be a record player.
The one who possesses it will gain the ability to detect the presence of gold and other precious metals, if they lie within a mile or so. However, the owner will be compelled to turn these metals into chains and rings (if they are not in this form already), and to wear as many of them as possible.
If the owner gathers so much jewellery that they are unable to bear the weight of it all, the Deck will summon four-legged, horned animals who will protect the wearer in return for getting some of their precious metals. These creatures are called hip-hoppotamuses.
There are some who say that the Deck will turn its owner into a criminal. Others say that it gets a bad rap.