Sure, it’s a bit “Supernatural,” but the idea of a crossroads demon making deals seems like a fun thing to add as long as the players have to pay up in horrible ways.
Trace: • The mummy that doesn't rise up as expected • Frostbite (legendary item) • Carousing • Etiquette of the Table • Crossroads Demon
Fortunately, rolling up a new character only takes a few minutes