Crimson Skull Chambers is an unusual location in Total War: WARHAMMER III. It raises Khorne corruption locally and can trigger violent Khorne effects; it also boosts melee offensive stats under certain conditions.
Be warned that if mismanaged this Cult does have the potential for a large difficulty increase via
mass war declaration.
This unusual location can be disabled in the settings before starting a campaign.
Crimson Skull Chambers
Champions of the gore-slicked chambers emerge fully-fledged members of the cult, forever fermenting in ill-contained thirst for bloodshed.
Khorne's Sanction: Each time you declare war on a faction all Khorne corruption in this province will be removed
This location will be extremely costly to remove
Khorne corruption: +20
(local region)
When Khorne corruption is 100 or more:
Khorne's Parting Gift: You will instantly declare war on 10 random factions
This location will be removed
When Khorne corruption is less than 50:
Charge bonus: +50%
(all region owner armies)
Base weapon damage: +20%
(all region owner armies)
Khorne's Sanction: Each time you declare war on a faction all 
Khorne corruption in this province will be removed
This location will be extremely costly to remove
Khorne corruption: +20
(local region)
Khorne's Parting Gift: You will instantly declare war on 10 random factions
This location will be removed
Charge bonus: +50%
(all region owner armies)
Base weapon damage: +20%
(all region owner armies)