What is the Karsus Codex?

A BG3 mod workbench: study gear, apply recipes, and ship ready-to-drop .pak files - you never need to touch a script.

Coming soon - Remix mods from other users, more types of items, and more recipes!

Ready to build?

Sign in to create or rebuild mods, share them publicly, and one-click a “Feeling lucky” draft with random items and recipes.

Sign in Choose Google, Discord, or a username/password account.

Recent Mods from the Community

offbrand_fishsticks
offbrand_fishsticks created Experiment_Necrotic_Damage_Bow_ffd96910
A Bow +2 that, hopefully, just does Necrotic damage and not piercing damage. Also applying Loviatar's Scourge to try and make it an AoE bonus. This is a Ranged Death Cleric piece. Includes items: - L...
2 days ago
Download .pak
offbrand_fishsticks
offbrand_fishsticks created Radbarian_Robe_and_Maul_Set_7d86ce55
Radiant robes; Radiant Maul. That should be enough to get a tiger barbarian going, right? Includes items: - Maul +2: Bow of Awareness, Bow of the Banshee, CRE_BloodOfLathander, Gandrel's Aspiration, ...
2 days ago
Download .pak
offbrand_fishsticks
offbrand_fishsticks created For_LoveSickInTheHead_1d974f14
Luminous Robes! Includes items: - Icebite Robe: Luminous Armour
3 days ago
Download .pak
offbrand_fishsticks
offbrand_fishsticks created Scout_Starter_Pack_a0b8012e
Torch of Revocation, 3 extra damage types Light Crossbow +1, 3 extra damage types
15 days ago
Download .pak
offbrand_fishsticks
offbrand_fishsticks created Lightning_Lord_Limited_Edition_46e09b06
You're gonna have 2 +2 daggers with lightning charges, and a +2 bow with lightning charges. Like a Mega-Joltshooter. Oh, and they all have 1d4 lightning damage. Bring your water bottles!
15 days ago
Download .pak

Changelog

  • Dec 16, 2024 — Launched custom domain: karsus.3d6.club. All 10 elemental damage type recipes now available (acid, cold, fire, force, lightning, necrotic, poison, psychic, radiant, thunder).
  • Dec 15, 2024 — New weapon damage conversion recipes: transform any weapon to deal alternative damage types (e.g., Necrotic Greatsword, Radiant Scimitar).
  • Dec 11, 2024 — Armor support added! Apply recipes to studded leather, chain mail, and other armor types. New Luminous Armor recipe tested and working.
  • Dec 1, 2024 — New "Feeling lucky" generator with optional damage themes: one click builds a random draft you can tweak.
  • Dec 1, 2024 — You can now download .pak files directly from the public mods feed. Mod builder/drafts updated for easier editing.
  • Nov 30, 2024 — New recipe: Phalar Aluve pattern. Added tag filtering to the recipe selector.
  • Nov 23, 2024 — Initial weapon recipe system; study items search with quick links.