Eberron - The Age of Worms
Dragoneyes has quite a few rowdy gambling halls, but Chance is a more sophisticated casino. In addition to running the standard games and making odds on the various races and sporting events that occur throughout the city, Chance has a reputation for being able to arrange and cover almost any bet. Can you survive for two days with House Tarkanan trying to assassinate you? Can you seduce the ambassador from Aerenal in the next 24 hours? Chance makes the odds, takes the bet, and makes the arrangements required to set the challenge in motion.
The casino is owned by a shapeshifter named Chance. Almost nothing is known about Chance; the individual wears a different guise every night, and the only way to recognize Chance is by the distinctive amulet it wears. Rumors abound that Chance is the leader of the Tyrants known only by the moniker Tyrant One. It’s a well-known secret that the casino is a front for the criminal organization, but the Tyrants grease enough palms in the city watch that no one has brought the law to bear against them.