CurseForge · Minecraft mod
Cataclysm: Spellbooks
An addon for Iron's Spells and Spellbooks and L_Ender's Cataclysm
Quick answer
Which Cataclysm: Spellbooks release should I use?
Cataclysm: Spellbooks cataclysm_spellbooks-1.1.11-1.21.jar targets 1.21.1 with NeoForge. The project page does not say whether it belongs on the client. The project page does not say whether it belongs on the dedicated server. All 12 required mods have matching files.
Where it goes
Is Cataclysm: Spellbooks required on the client, server, or both?
The project page does not say whether it belongs on the client. The project page does not say whether it belongs on the dedicated server.
The source does not explicitly classify this release as client-only or server-only.
What else does Cataclysm: Spellbooks cataclysm_spellbooks-1.1.11-1.21.jar need?
cataclysm_spellbooks-1.1.11-1.21.jar. Change the file and its required mods may change too.
Install Iron's Spells 'n Spellbooks, L_Ender 's Cataclysm, AzureLib, Ace's Spell Utils and 8 more first. We found matching files for this game-version and loader setup. 7 come through another mod in the chain.
7 extra mods were pulled in by other dependencies. Indented rows show who needs each one. We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Cataclysm: Spellbooks without breaking your instance.
Built for Cataclysm: Spellbooks cataclysm_spellbooks-1.1.11-1.21.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use cataclysm_spellbooks-1.1.11-1.21.jar. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Iron's Spells 'n Spellbooks, L_Ender 's Cataclysm, AzureLib, Ace's Spell Utils and 8 more first. We found matching files for this game-version and loader setup. 7 come through another mod in the chain.
- 03
Put it on the correct side
The project page does not say whether it belongs on the client. The project page does not say whether it belongs on the dedicated server.
- 04
Pick the file you checked
Use the “Get this file” button beside cataclysm_spellbooks-1.1.11-1.21.jar. It opens that exact file at the source.
About this project
What does Cataclysm: Spellbooks add?

📜Description
Cataclysm: Spellbooks is an addon for both Iron's Spells 'n Spellbooks and L_Ender's Cataclysm.
Currently this mod adds in a total of 65 new spells, with more planned for development. This mod also adds in a new spell school: Abyssal and Technomancy. The Abyssal School houses all of the Leviathan based spells, and Technomancy is inspired by The Harbinger.
NOTE: THIS MOD IS STILL BEING DEVELOPED AND SPELLS WILL BE ADDED!
NOTE 2: "Player, please install Azurelib", the dev pleaded. Then the dev collapsed and died.
NOTE 3: 1.20.1 IS NO LONGER SUPPORTED. DO NOT BACKPORT THIS MOD OR MAKE ANY REUPLOADS TO ANY SITE
If you would like to see which spells are planned, head over to the Github page to check!
🔗Links
Need a server? Check out Bisect Hosting!

Project description from CurseForge.
Pick your setup
Cataclysm: Spellbooks by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.1
1 loader build1.20.1
1 loader build1.19.2
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Cataclysm: Spellbooks versions and loaders
cataclysm_spellbooks-1.1.12-1.21.jar
31 May 2026
cataclysm_spellbooks-1.1.11-1.21.jar
2 Mar 2026
cataclysm_spellbooks-1.1.10-1.21.jar
2 Mar 2026
cataclysm_spellbooks-1.2.9-1.20.1-all.jar
27 Feb 2026
cataclysm_spellbooks-1.2.8-1.20.1-all.jar
11 Jan 2026
cataclysm_spellbooks-1.1.10-1.21.jar
20 Dec 2025
cataclysm_spellbooks-1.2.7-1.20.1-all.jar
21 Oct 2025
cataclysm_spellbooks-1.2.6-1.20.1-all.jar
20 Oct 2025
cataclysm_spellbooks-1.2.5-1.20.1-all.jar
4 Oct 2025
cataclysm_spellbooks-1.2.4-1.20.1-all.jar
3 Oct 2025
cataclysm_spellbooks-1.2.3-1.20.1-all.jar
3 Oct 2025
cataclysm_spellbooks-1.1.9-1.21.jar
25 Aug 2025
Looking for an older file? The official CurseForge project page is in Resources.





