Uuna

Players must first obtain Call of the Devourer, and then collect 3 different items to create a Bone Effigy.

Imp Bone - (65.89 19.42) Located in the Den of Fiends (same cavern system as Mother Rosula) in northeastern Antoran Wastes. The bone can be found on the ground in front of the second imp mother's pool of fel.

Ur'zul Bone - (50.39 56.15) Located next to an alter and a large bone spine protruding from the ground at Collector's Hovel, northwest of the Felfire Armory.

Fiend Bone - (52.37 35.33) Located behind a small pool of fel at Scavengerss Boneyard, south of The Spirit Crucible.

Once you've collected all 4 items, head southeast of Scavenger's Boneyard (54.8 39.1) where you'll find a marked green spot on a pile of bones. Interact with this pile of bones and create the item that will summon the rare elite.

Uuna's Continued Story: In Patch 7.3.5, players are given the opportunity to help Uuna find some closure and defeat the darkness that hunts her.

There are two parts players must complete (in order). The first involves helping Uuna prepare to fight the darkness, finding Uuna, and finally helping her defeat the darkness. The second part involves taking Uuna on a 'World Tour', taking her to specific locations. Throughout these steps Uuna will receive an updated appearance, eventually donning a flower crown and holding a wand and doll. She keeps this new look even after completing all necessary steps.