Nightblade

Raised as a wizard-priest in the church of the dark god Zon-Kuthon, Isiem escaped his sadistic masters and became a rebel, leaving behind everything he knew in order to follow his conscience. Now, his unique heritage makes him perfect for a dangerous mission into an ancient dungeon said to hold the magical Nightblade, a weapon capable of slaying devils by the thousands and freeing the world of their fiendish taint. Accompanied by companions ranging from a righteous paladin to mercantile mercenaries, Isiem will lead the expedition back into shadowed lands that are all-too familiar. And what the adventurers find at the dungeon's heart will change them all forever.