Few things shine as bright as the jewels of Hell
A rare and diseased jewel, a canker fallen from the heavens
“Gold. GOLD. GOLD! Beautiful, wonderous, Gold! I am Rich I tell you. I am the luckiest man alive!”
“Ever in my hand, lies the Blade of the Mad. It’s straight, simple craft is so alluring to me… It drives me to evil, but I love what it does. For the first blood the blade tasted was that of a human.”
All spell casters gain their abilities through a form of demon possession. So in order to gain magical abilites, PCs must track down and trap demons. Of course there are some pretty powerful demons, if the demon is stronger than the PC, the PC could find themselves subjugated to the Demon's will.