Crusader Kings 3 Sub-Mod

I’m building a functional mechanics-driven sub-mod for the Crusader Kings 3 total conversion Realms in Exile v4.3, titled Mûmakan Ring-Lore & Shadow Sovereignty. The mod introduces an end-game progression framework centered around independent ring-crafting, military centralization, and imperial domination for powerful rulers within the southern regions (Far Harad / Mûmakil cultures).

Here’s what I need from you:

A fully functional CK3 mod folder that drops straight into the Steam Workshop upload tool, complete with accurate localization files using the required French in-game nomenclature for mechanics/traits (e.g., Forges Maîtresses de Mûmakan, Dégâts des Hommes d'Armes Mûmakil) and a clean .mod descriptor.

Robust Paradox Scripting and YAML accuracy to prevent checksum errors or version-lock issues. This includes setting up precise event scripts, defines edits, modifiers, and custom character flags (such as has_forged_minor_ring and has_forged_master_ring).

A concise changelog and set-up notes so players understand the progression mechanics—from unlocking the Duchy building to managing the strict tier hierarchy and the hardcoded 16-ring limit for vassals.

Key Mechanics to Implement

Infrastructure: A new Duchy-tier building, Forges Maîtresses de Mûmakan, restricted to Far Harad capital holdings under Feudal or Clannish governments, granting specific Mûmakil combat modifiers and unlocking the ring-crafting interface.

The 3-Tier Ring-Crafting Progression (Player-Only):

Palier 1 (L'Anneau Mineur): High piety/gold cost initializing the foundational character flag.

Palier 2 (L'Anneau Maître - Akhâsh-Mûmak): A massive investment yielding either an imperfect Elven-tier ring with global threat scripts (40% weight) or the total success L'Akhâsh-Mûmak Éveillé with locked 100 Dread, health bonuses, and fertility traits (60% weight).

Palier 3 (Les Anneaux de Loyauté): A hard cap of 16 forgeable rings gifted to powerful internal vassals, forcing conversion to the liege's Dark Cult, locking a +100 opinion modifier, stopping physical aging, and triggering automated cadet branch scissions to prevent family bloat.

Custom Database Traits:

loyalty_to_the_ring (Serviteur de l'Anneau): 100% inheritance weight, absolute hardcoded block preventing characters from joining or supporting any political factions against the master ring bearer.

will_of_the_ring (Volonté de l'Akhâsh-Mûmak): Absolute transmission to the primary heir, granting martial/dread stats at the cost of general opinion and stress gain.

Custom Dynasty Legacy Tree (La Volonté des Anneaux): A 5-tier specialized track unlocking globally upon forging the minor ring, scaling fertility, lowering ring-crafting costs, boosting thrall combat advantage, and implementing a 5% monthly gold tribute from ring-bound vassals to the master treasury.

We’ll ensure these mechanics remain perfectly balanced, lore-friendly, and completely dynamic so that any eligible Southern or Black Númenórean ruler can break away from Sauron's authority to forge their own path of Shadow. If you have experience shipping CK3 mods and are comfortable debugging via the error.log, this should be straightforward.

I’ll test on the current live build of Realms in Exile v4.3, share feedback, and sign off once the mod loads without errors, performs flawlessly for at least 50 in-game years, and passes multiplayer checksum. Look forward to seeing what you can do.