The Ur-Council was the ruling body of Nova Terra during the Nova Terra Interregnum. Secessionists, the Ur-Council dismissed the authority of the High Lords of Terra and claimed rule over all of Segmentum Pacificus, beginning a division that lasted for 9 centuries. Eventually in M35, the Ur-Council was attacked by a massive War of Faith of the Ecclesiarchy in an event known as the Cataclysm of Souls.
It was suspected by the Dark Angels that the mysterious Cypher was a member of the Ur-Council, leading to a daring Ravenwing strike on Nova Terra. However when they arrived they failed to secure any prisoner and could not verify the rumor.
- 1: Warhammer 40,000 5th Edition Rulebook, pgs. 124-126
- 2: Codex: Dark Angels (6th Edition), pgs. 36-37