Fundamental Principles - Iron's Spells Addon

⭐ — (4 endorsements) 📥 1,723 downloads 📌 v1.1.7.1 📅 4/2/2026
🟡 Updated this year

By ypsilonM · neoforge

⬇ Download Mod Source: Modrinth ↗ 📅 Updated: 8/2/2026 📅 Created: 4/2/2026
⚠️ Install Order · 2 steps
1🛠️ Forge — Minecraft Forge (mod loader) Download ↗
2🛠️ Fabric — Fabric Loader Download ↗

Install in this order, then this mod last — most mods fail to load without their framework and dependencies in place.

🔍 Analysis

  • 👍 0.2% endorsement rate
  • 🏆 #40 of 55 neoforge mods in this game by downloads

📋 About This Mod

<center> <img src="https://cdn.modrinth.com/data/cached_images/aabef40aab8342d72e7f232384e40a149d8067e5.png" alt="fundamental principles"> </center> --- Fundamental Principles is an addon for the magic mod Iron's Spells n Spellbooks that intends to add some more features related to the magic system. In addition, there's also some new spells and mobs added to the gameplay. Its main objective is to change the gameplay of magic and also taking a focus on mage PVE/PVP. ### Required Dependencies: - Iron's Spells n' Spellbooks - Geckolib ## Spell Exhaustion Now, when you cast spells, you'll become exhausted in the process. Exhaustion will be reflected in a bottle icon that will fill as fatigue increases. The level value will appear in the icon's upper left corner, and the exhaustion points will appear in the bottle's bottom right corner. <center> <img src="https://cdn.modrinth.com/data/cached_images/40f44356ec0618139f5b546757cc850a177d8804.png" alt="0"> <img src="https://cdn.modrinth.com/data/cached_images/d5eccf639a805ec91f2979e987ad78dc6e822a74.png" alt="1"> <img src="https://cdn.modrinth.com/data/cached_images/0ed0c38535e6de24d363e7e9130103473fab1a1c.png" alt="2"> <img src="https://cdn.modrinth.com/data/cached_images/0460d64472d01df3f8e0296ab48eac9e087c038c.png" alt="3"> <img src="https://cdn.modrinth.com/data/cached_images/2040a2d25a15a949022ec2ca38b7df1740e3bb99.png" alt="4"> </center> Exhaustion will passively decrease over time. You build up exhaustion up to maximum exhaustion level (4). Each level has a total amount of exhaustion until reaching next level. The accumulated exhaustion decreases the output power of spells. The way to downgrade the exhaustion level is getting to 0 exhaustion points and waiting a while before accumulating exhaustion again. The higher the rarity of a spell casted is, the more fatigue is accumulated. The higher your spell power and your school-specific spell power are when casting a spell of the same school, the lower the accumulated exhaustion. ## Star Alignment This is a rare event that has a pseudo base chance of 1 in 100. It is a critical hit, dealing damage approximately the base damage of the hit x2. It can only be triggered by physical and critical hits, and certain factors, such as whether you have less the half of your maximum health, increase the chance of landing one. When this event occurs, the hitter gains resistance 2 for 4 seconds, and the target gains weakness 1 for 30 seconds. Additionally, the hitter enters a mindful state, granting them +50% additional mana regeneration. <center> <img src="https://cdn.modrinth.com/data/cached_images/b65c15663d0b6b75fcf66a7cf28be11d78bd0c65.png" alt="mindful_effect"> </center> It also reduces exhaustion entirely and removes the burnout effect. If you continue landing hits that cause the stars to align, the mindful effect can reach level 3. Each additional level of mindful gives you a greater chance of landing such hits, in addition to boosting mana regeneration. There are currently a bunch of different particle constellations that could be shown. ## BURNOUT The burnout effect makes you unable to cast any spell. This could be acquired while staying between 4-3 exhaustion level and casting spells. The chance to get it at level 3 is 3% for 15 seconds , meanwhile at level 4 the chance is 10% during an entire minute. Landing a Star alignment will remove this effect. <center> <img src="https://cdn.modrinth.com/data/cached_images/e4029ee69ee02050b8cece49071696f8a7668995.png" alt="burnout_effect"> </center> ## Spell Level Selection It has been added a selection wheel like the one in the iron's spells mod, except this one focuses on modifying the level you want to select to cast the selected spell. This was done with the reasoning, "If I already know how to use Fireball at maximum level, why wouldn't I know how to limit its power to use fewer resources or deal a defined amount of damage?". The rights of the texture goes to the original mod creator (Iron). ## Decrementing Exhaustion Currently there are three consumable items that will help you reduce the accumulated exhaustion. Ancient Fruit is made of a golden apple and Pitcher extract, having similar effects but better. Eating this will reduce 50 exhaustion points and give you Soothe effect. Luminaire extract is a substance that will be usefull to fill your Exhaustion Recipients. This substance is made of arcane mixture in a brewing stand. Pitcher extract can be brewed using a Pitcher plant in a brewing stand. Currently there are two Exhaustion Recipients. The flask and the tonic, being the tonic an upgraded version of the flask. Consuming a charge of these items will decrease a certain amount of exhaustion points and will grant you a certain level of Soothe effect. The Soothe Effect will increase your exhaustion regeneration for a while. ## Mana Reinforcement Mana Reinforcement is an activatable status. While active, you use part of y

fundamental principles

Fundamental Principles is an addon for the magic mod Iron's Spells n Spellbooks that intends to add some more features related to the magic system. In addition, there's also some new spells and mobs added to the gameplay.

Its main objective is to change the gameplay of magic and also taking a focus on mage PVE/PVP.

### Required Dependencies: - Iron's Spells n' Spellbooks - Geckolib

## Spell Exhaustion

Now, when you cast spells, you'll become exhausted in the process. Exhaustion will be reflected in a bottle icon that will fill as fatigue increases. The level value will appear in the icon's upper left corner, and the exhaustion points will appear in the bottle's bottom right corner.

0 1 2 3 4

Exhaustion will passively decrease over time. You build up exhaustion up to maximum exhaustion level (4). Each level has a total amount of exhaustion until reaching next level. The accumulated exhaustion decreases the output power of spells. The way to downgrade the exhaustion level is getting to 0 exhaustion points and waiting a while before accumulating exhaustion again.

The higher the rarity of a spell casted is, the more fatigue is accumulated. The higher your spell power and your school-specific spell power are when casting a spell of the same school, the lower the accumulated exhaustion.

## Star Alignment

This is a rare event that has a pseudo base chance of 1 in 100. It is a critical hit, dealing damage approximately the base damage of the hit x2.

It can only be triggered by physical and critical hits, and certain factors, such as whether you have less the half of your maximum health, increase the chance of landing one. When this event occurs, the hitter gains resistance 2 for 4 seconds, and the target gains weakness 1 for 30 seconds. Additionally, the hitter enters a mindful state, granting them +50% additional mana regeneration.

mindful_effect

It also reduces exhaustion entirely and removes the burnout effect. If you continue landing hits that cause the stars to align, the mindful effect can reach level 3. Each additional level of mindful gives you a greater chance of landing such hits, in addition to boosting mana regeneration.

There are currently a bunch of different particle constellations that could be shown.

The burnout effect makes you unable to cast any spell. This could be acquired while staying between 4-3 exhaustion level and casting spells. The chance to get it at level 3 is 3% for 15 seconds , meanwhile at level 4 the chance is 10% during an entire minute. Landing a Star alignment will remove this effect.

burnout_effect

## Spell Level Selection

It has been added a selection wheel like the one in the iron's spells mod, except this one focuses on modifying the level you want to select to cast the selected spell. This was done with the reasoning, "If I already know how to use Fireball at maximum level, why wouldn't I know how to limit its power to use fewer resources or deal a defined amount of damage?". The rights of the texture goes to the original mod creator (Iron).

## Decrementing Exhaustion

Currently there are three consumable items that will help you reduce the accumulated exhaustion.

Ancient Fruit is made of a golden apple and Pitcher extract, having similar effects but better. Eating this will reduce 50 exhaustion points and give you Soothe effect.

Luminaire extract is a substance that will be usefull to fill your Exhaustion Recipients. This substance is made of arcane mixture in a brewing stand. Pitcher extract can be brewed using a Pitcher plant in a brewing stand.

Currently there are two Exhaustion Recipients. The flask and the tonic, being the tonic an upgraded version of the flask. Consuming a charge of these items will decrease a certain amount of exhaustion points and will grant you a certain level of Soothe effect.

The Soothe Effect will increase your exhaustion regeneration for a while.

## Mana Reinforcement

Mana Reinforcement is an activatable status. While active, you use part of y

🤖 AI-enhanced — based on mod data

📊 Mod Details

Game
Minecraft Mods
Author
ypsilonM
Version
1.1.7.1
Downloads
1,723
Endorsements
4
Category
neoforge
Created
4/2/2026
Updated
8/2/2026
Game Versions
1.21.1

🔧 How to Install Minecraft Mods Mods

Download from Modrinth. Use Prism Launcher or drop into your mods folder.

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Visit the official mod page for specific installation instructions for this mod.

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❓ Frequently Asked Questions

Which Minecraft Mods versions does Fundamental Principles - Iron's Spells Addon support?

The author lists 1.21.1. Other versions may work but are untested by the author.

What is the latest version of Fundamental Principles - Iron's Spells Addon?

Version 1.1.7.1, published 2026-08-02 with 1,723 downloads recorded at the source.

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