Talk to Koi Le Trueverse. "During the final phases of their rituals, they one by one removed my organs and placed them into the lava cracks throughout the cave. The organs mixed with the traces of lava would form stone dervishes." "I will not go on knowing my organs are out there in the form of these minions. Find these stone dervishes and decimate them. They love to reside near the warmth of the lava cracks."