This quest is no longer available in game.
Bring $1oa Writhing Essence to Arcanomancer Vridiel.
The release of the energy previously trapped in the Nightwell has... complicated the influence of Aman'Thul scattered about the Broken Isles. Sadly, the results of my previous work have been invalidated, much like the contents of this vial.
I must understand what has caused this change! Please, bring me more samples so that I may continue my work. It goes without saying that you will be the beneficiary of any breakthroughs I may find.