CurseForge · Minecraft mod
ISS: Additional Spells
More combat, utility, and traversal spells across all schools of Iron's Spells 'n Spellbooks
Quick answer
Which ISS: Additional Spells release should I use?
ISS: Additional Spells iss_additional_spells-1.21.1-1.0.2.jar targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 5 required mods have matching files.
Where it goes
Is ISS: Additional Spells required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does ISS: Additional Spells iss_additional_spells-1.21.1-1.0.2.jar need?
iss_additional_spells-1.21.1-1.0.2.jar. Change the file and its required mods may change too.
Install Iron's Spells 'n Spellbooks, playerAnimator, Iron's Lib, GeckoLib and 1 more first. We found matching files for this game-version and loader setup. 5 come through another mod in the chain.
5 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 ISS: Additional Spells without breaking your instance.
Built for ISS: Additional Spells iss_additional_spells-1.21.1-1.0.2.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use iss_additional_spells-1.21.1-1.0.2.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, playerAnimator, Iron's Lib, GeckoLib and 1 more first. We found matching files for this game-version and loader setup. 5 come through another mod in the chain.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside iss_additional_spells-1.21.1-1.0.2.jar. It opens that exact file at the source.
About this project
What does ISS: Additional Spells add?

More Magic. More Possibilities.
ISS: Additional Spells is an expansion for Iron's Spells 'n Spellbooks focused on expanding what each school of magic can actually do.
Rather than simply adding more ways to deal damage, Additional Spells introduces new utility, traversal, support, control, and combat options designed to feel like natural extensions of the existing spell schools.
Swap places with an enemy using Ender magic. Electrify a body of water with Lightning. Sacrifice your own health to empower Blood magic. Create paths with Ice, manipulate enemies with Eldritch magic, support allies with Holy spells, and much more.
Built to Feel Like Part of ISS
The goal is simple: fill gaps in the existing schools without replacing the spells that already make Iron's Spells 'n Spellbooks great.
New spells are designed around the identity of their school and use Iron's Spells 'n Spellbooks and vanilla Minecraft assets wherever possible, helping them fit naturally alongside the base mod.
This is only the beginning. Future updates will continue expanding each school with new kinds of magic, with a particular focus on giving every school meaningful options both inside and outside of combat.
Current Spells
Nature
Nature’s Bounty — AoE bonemeal for nearby plants.
Pollen Cloud — Creates a yellow cloud that debuffs enemies.
Call of the Wild — Nearby animals temporarily fight for you.
Fire
Combustion — Delayed explosion centered on a target.
Conflagration — Fire that spreads between enemies.
Ice
Ice Bridge — Creates a temporary ice path.
Frozen Ground — Creates slippery frozen terrain.
Ice Prison — Traps a target in breakable ice.
Lightning
- Electrify Water — Electrifies water, damaging creatures inside.
Blood
Blood Sacrifice — Converts health into mana.
Life Tap — Trades health for increased Spell Power.
Blood Mark — Killing the marked target heals you.
Hemorrhage — Target takes damage while moving.
Shared Wounds — Redirects some damage you take to a target.
Holy
Purify — Removes negative status effects.
Turn Undead — Forces nearby undead to flee.
Consecrate — Holy area that harms undead and aids allies.
Martyr’s Gift — Sacrifice health to massively heal an ally.
Ender
Swap — Swap positions with a target.
Ender Banishment — Temporarily removes a target from the battlefield.
Spatial Anchor — Prevents teleportation in an area.
Eldritch
Madness — Makes a target attack unpredictably.
Dread — Causes nearby creatures to flee.
Unmake — Deals massive damage to summoned creatures.
Unstable Magic — Target takes damage when casting spells.
Requires Iron's Spells 'n Spellbooks.
Additional Spells is designed as an ongoing expansion, with more spells and new uses for every school planned for future updates.
Project description from CurseForge.
Pick your setup
ISS: Additional Spells by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
ISS: Additional Spells versions and loaders
iss_additional_spells-1.21.1-1.0.2.jar
14 Nov 2026
iss_additional_spells-1.21.1-1.0.0.jar
6 Oct 2026
Looking for an older file? The official CurseForge project page is in Resources.