Complete the event, head inside the oasis and speak to Au’manal to exchange the fraudulent Credentials for the Necklace. After that, go to the Oasis and speak to Xydarid, the vendor that gives you the first item to begin the hunt for the password. You’ll want to browse his wares, acquiring the Fraudulent Credentials item.
You can get the necklace by killing the first boss and going downstairs, turning right and finding the Questionable Trader. To start it, you’ll need to wait till you have the Passably-Forged Credentials necklace from having full cleared the dungeon at least once. Tazavesh, the Veiled Market, has a hard mode that is activatable on Mythic Difficulty, granting extra mechanics to make the fights tougher in exchange for better rewards.
