Rampaging Monolith

Quest giver: Gordish Frozenheart
Requirements: Amiable faction
Size: 24

You will find the Rampaging Monolith in the northwest area. It hits for around 2000 is extra resistant to poison and disease, and frequently casts:

Every 15% of health the Monolth summons four dervish adds, each hitting for 700s and having their own proc:

The adds have fairly low health so just heal through the Rain AE, peel off every 15% to kill adds, and when ready take it down to next set. Rinse and repeat until dead.

The reward is 7 crystals each and one of the following: