From Guild Wars 2 Wiki
Can be used to capture a lost soul.
— In-game description
- Acquired from Burnisher Kengo in Auric Basin. Cannot be acquired during the Trial by Fire Tarir Challenge events.
- If you are having trouble acquiring the Mirror, try asking Burnisher Kengo after the first event of the outpost chain Collect sediment from the fallen Exalted for Arcanist Mariette has been completed.