WOW Quest:Archivum Data Disc (13604)  

Quest chain:

1. Archivum Data Disc - Started from Archivum Data Disc. Dropped by killing Molgeim or Steelbreaker last in the Iron Council ecounter.
2. The Celestial Planetarium

• Hodir's Sigil - Defeat Hodir on his hard mode
• Thorim's Sigil - Defeat Thorim on his hard mode
• Freya's Sigil - Defeat Freya on her hard mode
• Mimiron's Sigil - Defeat Mimiron on his hard mode

1. Algalon - Receive the Celestial Planetarium Key which allows the entire raid acces to Algalon once Yogg-Saron has been killed.
2. Kill Algalon to be able to get All is well that ends well.