Excellent background character. Leaves plenty of room for things to pop-up out of nowhere.
It might be feasible for Corvis sighting rumors to spread. A crazy man in ragged robes with blue eyes spouting inanities in the middle of the street might fit the description of a crazed Corvis. Maybe give him an orb that glows slightly whenever someone shouts around it. Go to Comment
A large river that is continuously covered in a thick layer of fog. There will be either a rope ferry to get across or possibly a boat that is rowed across by worshippers of the water elementals. It is very thick fog to the point where it even muffles voices even at close range and visibility even beyond a foot is almost impossible.