Atziri drops PoE Trade specific items which can't be obtained outside of the experience and she drops among those 4 Vaal mortal fragments. Combining 4 different Vaal Mortal fragments in the map device will open 6 portal sites to Alluring Abyss which is where you can battle Uber Atziri which is quite a bit more powerful (is regarded as the toughest encounter in the sport by some people). The Uber Atziri is precisely the same battle as routine Atziri, only mini-bosses and Atziri strikes much harder and has a good deal more HP. Uber Atziri can shed some of the very sought-after and powerful items in the sport so being able to kill her may get you some wonderful rewards.
When combined from the map device, these fragments open portal to the Pale court in which you have to face all of 4 Pale Court members collectively in a more demanding encounter.
As many of those stronger game experiences, The Pale Court rewards gamers with particular unique items upon conclusion -- but the item dropped depends on which Pale Court manhood you kill .
Each guardian constantly drops their fragment upon passing and has a chance to drop some unique items unique to each guardian. Combining 4 fragments, one of each guardian in the map apparatus opens portal to PoE Currency Buy Shaper's Realm where you can face Shaper.