Antumbra, Shadow of the Cosmos

Antumbra, Shadow of the Cosmos is an astral dagger with no physical form. It’s a concentrated burst of cosmic energy from hilt to blade, and no one knows what powers have been bound within this weapon.

You can obtain Antumbra, Shadow of the Cosmos by defeating Rigelon in the Sepulcher of the First Ones raid.

The drop chance is 11 %.

Besides the relatively low drop rate, you may face challenges just getting to Zereth Mortis. This zone is locked for players who didn’t play through the Shadowlands expansion, and unlocking it requires completing a significant number of story quests.

If you didn’t play Shadowlands or level alternate characters in that expansion, we’ve prepared a special guide to help you unlock this zone.

If you’ve already unlocked the zone, getting there is straightforward:

1. Go to your faction’s portal room.
2. Teleport to Oribos.
3. Head to the second floor, where you’ll find a distinctive yellow portal that leads to Zereth Mortis.

If the portal isn’t visible, it means you haven’t completed the story questline required to unlock the zone.

• The dagger changes its appearance depending on the raid difficulty tier. If you’re after a specific colour scheme, you’ll need to complete the raid on the corresponding difficulty level.

  LFR (Looking for Raid)
  

  
  Normal
  

  
  Heroic
  

  
  Mythic
  

  

• The dagger is available to all classes that can wield daggers, regardless of their primary stat — the same colour scheme is available for all three stats.

• Some bosses in the raid have challenging mechanics. We recommend running the raid with a group if your character isn’t strong enough to handle the encounters solo.