Milagro Man is the Stand of a weapon merchant from a certain era, featured in JoJolion.
The story of Milagro Man's curse originated from its ability. At its most basic, the Stand can create and duplicate money, with the legal tender changing depending on the country the Stand's money is currently in. The money appears to be generated from the corners of other bills, out of thin air as well. None of the bills are exactly identical, but they all have a serial number ending in "13R". Anyone afflicted by Milagro Man's power through simple touch will constantly earn money until they are literally buried in cash, eventually resulting in death via crushing or asphyxiation. No matter how they try to spend or destroy the money, it will be returned to them and they will somehow receive more money than they originally spent. The only way to escape Milagro Man's power is to return the money to the previous owner or have the money destroyed by another person, after which Milagro Man is transferred to the new victim.

(Source: Jojo's Bizarre Adventure Wiki)