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Thanatos has recently become a battleground as various factions seek to wrest the Celestial Orrery from the Oruscar Dynasty. The first threat came from the Word Bearers, but these were defeated with the help of the Kardenath Dynasty. However this dynasty in turn desired the Orrery, and the siege has continued in a civil war between Necrons.
- 1: Codex: Necrons (5th Edition), pg. 15
- 2: Codex: Necrons (7th Edition), pg. 13
- 3: Codex: Necrons (8th Edition) pgs. 28–29