Find Muyani in the skull-shaped rock above Wailing Caverns.
Oh, good, I'm glad you stopped by. We've heard disturbing rumors of corruption continuing to flourish in the Wailing Caverns. You seem like just the right person to investigate.
Since Naralex's awakening, one of his disciples has been watching over the area to ensure that deviate creatures remain in check. She is the one that has been sending us these dire warnings.
Meet up with her in the eye of the skull-shaped rock above Wailing Caverns and see if you can help her handle this situation.