BTW this is what Catherine's adopted brother looks like:
[hider=Brother][IMG]http://i1059.photobucket.com/albums/t422/Harvent/blackfire_zpsbafcc661.jpg[/IMG][/hider]
I thought maybe we could add him into the story at some point as a villain during a job. Maybe as an agent (or even master) of a Dark Guild.
He uses Soul Fire Magic. It's an evil flame that consumes not only the body but also the soul leaving nothing but death in it's wake.
Normally a forest scorched by fire with eventually regrow, but a forest scorched by Soul Fire will be blacked and dead forever.