Croesus' Fortune is an item that doubles your chances of finding treats or bonuses while performing actions with your horse. For example, you can find twice as many aging points or have a greater chance of finding bonuses such as a tub of grease or hoof pick.
This item costs is not available for purchase in the Black Market. It can only be won through promotions.
You receive a Croesus' Fortune at the start of the game, when you are being walked through the basics. You cannot purchase this item, however, you can buy one in the item exchange.