The 
Faceless Mask of the Nemesis isn’t supposed to be available in World of Warcraft until next week’s reset. But that didn’t stop one player from unlocking and equipping it days ahead of schedule!
According to the player, they had been repeatedly running Horrific Visions across multiple days. Then, without warning, the game allowed them to equip the Mask of the Nemesis. They assumed a stealth hotfix might have been pushed, but there’s no official confirmation by Blizzard. This unexpected access even allowed them to complete a full 5 Mask run.
I somehow unlocked the Mask of the Nemesis this week
byu/lightskinkanye inwow
How to Unlock the Faceless Mask of the Nemesis in Patch 11.1.5?
Faceless Mask of the Nemesis is created by combining shards that drop from Gamon and Hogger.
- In the Horrific Vision of Stormwind, interact with the WANTED poster near the entrance to the Mage Quarter to summon Hogger and loot
Nemesis Shard. - In the Horrific Vision of Orgrimmar, head to the Broken Tusk Inn and on the right side, you will find Gamon’s Axe. Interact with it to summon and kill Gamon who drops
Nemesis Shard. - Combine both shards to create the mask.