CurseForge · Minecraft mod
Build A Spell
An advanced, component-based spell creation system for NeoForge: combine delivery methods, effects, and modifiers in the Spell Builder to design your own spells, unlock components, and discover powerful multi-component combos.
Quick answer
Which Build A Spell release should I use?
Build a Spell v1.0.2 (MC 1.21.1) targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is Build A Spell 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 Build a Spell v1.0.2 (MC 1.21.1) need?
Build a Spell v1.0.2 (MC 1.21.1). Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
2 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 Build A Spell without breaking your instance.
Built for Build a Spell v1.0.2 (MC 1.21.1). Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use Build a Spell v1.0.2 (MC 1.21.1). It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 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 Build a Spell v1.0.2 (MC 1.21.1). It opens that exact file at the source.
About this project
What does Build A Spell add?
Overview
Spells in Build a Spell are assembled from three kinds of components:
- Delivery method — how the spell is cast (self, line of sight, projectile, homing projectile, or a ground rune).
- Effects — what the spell does (damage, status effects, terrain manipulation, summons, utility, and more).
- Modifiers — how the effects behave (more power, larger area, longer duration, chaining, piercing, bouncing, delays, and shape modifiers).
Mana cost is the sum of every component, scaled by your Spell Power. Certain combinations of components form combos that override their individual behavior to produce a single, more powerful spell — black holes, tornadoes, Void Rifts (dialable, linkable portals), summon swarms, and more.
Features
- 76 spell components: 7 delivery methods, 47 effects, and 22 modifiers, freely combinable up to 30 components per spell.
- 19 spell combos: special component combinations that unlock unique behavior (Black Hole, Tornado, Void Rift, Fortress, Meteor Strike, Blizzard, summon variants, and more).
- Spell Builder GUI: drag-and-drop component crafting with a grouped palette and live mana-cost feedback.
- Per-spell projectile visuals: choose a projectile's color, shape, and trail particle directly in the builder.
- Arcane Altar: an in-world block for enchanting and unlocking spell components.
- Custom attributes & enchantments: Mana Pool, Mana Regeneration, and Spell Power, with uncapped enchantment scaling.
- Inter-player portals: dialable, linkable portals for instant travel.
- Deeply configurable: deliveries, effects, modifiers, and roughly 150 individual gameplay numbers are exposed across per-category config files; individual components can be disabled (and become unobtainable) server-side.
- Cross-mod API: a stable public API for other mods to read/modify the attribute system and cast spells.
An example combo, the Black Hole.

Project description from CurseForge.
Pick your setup
Build A Spell by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.2
1 loader build26.1.2
1 loader build1.21.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Build A Spell versions and loaders
Build a Spell v1.0.2 (MC 1.21.1)
buildaspell-1.0.2-mc1.21.1.jar
19 Aug 2026
Build a Spell v1.0.2 (MC 26.2)
buildaspell-1.0.2-mc26.2.jar
19 Aug 2026
Build a Spell v1.0.2 (MC 26.1.2)
buildaspell-1.0.2-mc26.1.2.jar
19 Aug 2026
Build a Spell v1.0.1 (MC 1.21.1)
buildaspell-1.0.1-mc1.21.1.jar
19 Aug 2026
Build a Spell v1.0.1 (MC 26.2)
buildaspell-1.0.1-mc26.2.jar
19 Aug 2026
Build a Spell v1.0.1 (MC 26.1.2)
buildaspell-1.0.1-mc26.1.2.jar
19 Aug 2026
buildaspell-1.0.0-mc26.2.jar
8 Jul 2026
buildaspell-1.0.0-mc26.1.2.jar
8 Jul 2026
buildaspell-1.0.0-mc1.21.1.jar
8 Jul 2026
Looking for an older file? The official CurseForge project page is in Resources.
