A Harnic god may grant a divine boon to a hero for some reason. These can be used at some later point to slightly improve the hero's chances, to introduce a slight twist to the story, or some other minor effect.
This article details Hârnic currencies, the operation of Royal Mints, Counterfeiting, Usury, the Lore skill of Numismatics, and 30 rare coins that might turn up in a character's purse.