Spell Codex Iron's Spells 'n Spellbooks Addon Mod (1.21.1)
Spell Codex Iron's Spells 'n Spellbooks Addon Mod extends Iron's Spells 'n Spellbooks with a structured spell progression system. It turns loose spell…
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Spell Codex Iron’s Spells ‘n Spellbooks Addon Mod extends Iron’s Spells ‘n Spellbooks with a structured spell progression system. It turns loose spell scrolls into permanent discoveries stored inside a personal book. You spend experience points and ink to unlock each tier, then place your earned magic onto an action bar. The mod restricts casting so you only use abilities you have properly unlocked and equipped.
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Features:
- Transforms spell collection into a codex grid organized by magic schools.
- Allows you to discover spells by finding codex pages, absorbing old scrolls, or emptying inscribed spellbooks.
- Unlocks spell tiers in order using experience points and matching ink.
- Gives a 25% experience discount during unlocks when you hold a matching school focus.
- Locks casting to the action bar, preventing casting directly from the wheel, loose scrolls, or imbued weapons.
- Features a respec mechanic to refund spent experience points.
- Expands your action bar slots when you equip empty spellbooks in Curios slots.
- Tracks your collection with progress bars for each school and overall discoveries.
- Includes an in-game guide button with visual steps right inside the interface.
- Lets you adjust HUD positions for the action bar, mana group, and casting bar.
- Replaces standard scroll crafting with Empty Codex Page imprinting at the Scroll Forge.
- Allows recycling spare codex pages inside the Alchemist Cauldron to regain ink.
Commands:
/specs_codex: manages schools, discoveries, codex pages, and player access.
How to Use:
- Find Codex Pages in world loot, convert scroll drops, or imprint Empty Codex Pages at the Scroll Forge.
- Right-click discovered pages or leftover scrolls to absorb them into your collection.
- Press the action bar key (default: `) to open the interface.
- Place matching ink into the lower slot and click the + button to unlock the next tier.
- Select your unlocked spell and assign it to an open slot on your action bar to cast it.
Screenshots:








Spell Codex Iron’s Spells ‘n Spellbooks Addon Mod Download Links
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: In MC Java Mods, or directly above on this page.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Downloads as 513290.mcaddon
- Download size: 679 KB
- Download link checked 25 Sept 2026 — working
- Mirrored on our own servers — the download does not depend on the original host
These come from our own check of the pack file, not from the source page.