T'au Empire

Ordo Xenos Dal'yth Dossier — Pheromone Control, 4th Sphere & Farsight

Six thousand years ago, when an Adeptus Mechanicus Explorator fleet catalogued the planet T'au in 789.M35, the native T'au were primitive savanna-hunters wiping themselves out in tribal wars; only a sudden, Freak warp-storm quarantined their system and saved them from routine extermination. On the legendary 'Night of Mont'au' at the siege of Fio'taun, two mysterious figures—the first Ethereals ('Aun')—stepped out of the mist and calmed the warring plains, air, earth, and water tribes into a single compliant Caste society within hours.

Beneath the utopian facade of the 'Greater Good' ('Tau'va') lies an authoritarian regime of absolute eugenics (inter-caste breeding is strictly forbidden), 're-education camps', and biological mind-control.

Sub-Factions, Secret Orders & Classified Relics

• The Five Castes — Shas (Fire Warriors), Fio (Earth Engineers), Kor (Air Pilots, zero-G adapted), Por (Water Diplomats), and Aun (Ethereal Rulers).
• The Farsight Enclaves — Commander O'Shovah's breakaway military junta across the Damocles Gulf, completely free of Ethereal control.
• The Fourth Sphere of Expansion — Survivors of the disastrous 'Startide Nexus' Slipstream mass-warp jump who went xenophobic after seeing their human and Kroot auxiliaries birth a multi-armed Warp entity of the Greater Good.