Setting
Beneath the earth the dwarves command gangs of slaves, mostly goblins and orcs, along with indentured dwarves. They are searching for enchanted ores, whose refined alloys are called mithril. Necessary for runecrafting and thus for the dwarven military, mithril is the lifeblood of their economy. Unfortunately it is also the lifeblood of the earth. The magical flows in the ground conduct along crystallized veins of mithril called ley lines. As the dwarves remove these they disrupt the natural flows of magic and thus interfere with the natural processes the monsters, particularly the Dungeon Lords, depend upon