This Comic's Cast:

All those drapies and torches and musty bricks... I'm leaning towards ambiance as well.
However, it is a damn good explanation. Magic sources being what they are, and the CV universe having clear divisions on their magical spheres (thanks to CotM), I would have to say it's a damn good guess that nicely fits the information provided.
 
    

When evil spreads across the land, and darkness rises and the monsters roam. When the creatures of the night make beautiful music, and the things that go bump in the night go bump with greater enthusiasm. When the world is in peril and is in need of a hero...

These guys are, sadly, the best the world can hope for. These are the adventures of the heroes of CVRPG. They mean well, they try hard, and occasionally they do the impossible...

They actually do something heroic.