Vial of Diluted Nightwell Liquid

• Vial of Diluted Nightwell Liquid
• Artifact Power
• Binds when picked up
• Use: Grants 400 Artifact Power to your currently equipped Artifact.
• "Even watered down, the stopper can barely contain the power within."
• Sell Price: 25

Source

This item is a quest reward from the following:

•  [45] Paragon of the Nightfallen
•  [45] Supplies From the Nightfallen

It is also rewarded from certain Broken Isles world quests and found inside Curious Wyrmtongue Cache.

Patch changes

• Patch 8.0.1 (2018-07-17): This item no longer provides artifact power. Quality changed from rare to poor.
  
• Patch 7.0.3 (2016-07-19): Added.
  

External links

• Wowhead
• WoWDB