Tome Celestial: Troggherds of the Realms
From Age of Sigmar - Lexicanum
- Background on the Troggherds of the Realms, pg. 24-29. 
- Ages of Unthinking Destruction: Troggherds timeline, pg. 30-31. 
- Allegiance Abilities, pg. 32
- Warscroll Update: Bad Moon Loonshrine, pg.32
- Warscroll Battalion, pg. 33 
|No one knows for certain how many Troggherds are stomping their way across the Mortal Realms at any given time. The first inkling of their approach is typically a distant rumbling and a foul scent drifting on the winds. By the time troggoths have focused their limited attention on destroying all before them, it is too late for those who dare stand fast in the face of such an unstoppable force.
~ Ages of Unthinking Destruction.