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Build A Spell

by cyberday

Build A Spell is a NeoForge mod where players assemble their own spells from delivery methods, effects and modifiers in a dedicated Spell Builder screen.

NeoForgeClient and serverAll rights reserved1.21.1 – 26.2

What it does

Spells are built from components. A delivery method sets how a spell is cast: on the caster, along a line of sight, as a projectile, a homing projectile or on the ground. Effects decide what the spell does, from damage and status effects to terrain manipulation, summons and utility. Modifiers change how an effect behaves, giving it a greater area, a longer duration, chaining, piercing or bouncing, along with delays and shape modifiers.

The mod ships 76 spell components in total, which can be combined freely, up to 30 components per spell. Certain combinations form combos that override the individual behavior and produce a single, stronger result, such as a Black Hole, a Tornado, a Void Rift or a Fortress. The mod lists 19 spell combos, and summon variants such as Meteor Strike and Blizzard fall into the same group. Build A Spell runs on client and server, so the server and every player need it. Files are published for NeoForge across 1.21.1 – 26.2, and Modonomicon is an optional dependency.

Key features

  1. Component-based spell creation

    Players combine delivery methods, effects and modifiers into a spell, then design the result in the builder.

  2. Spell Builder screen

    A drag-and-drop interface with grouped palette and live mana-cost feedback shows what a spell will cost before it is crafted.

  3. Spell combos

    Special component combinations produce distinct behavior, including black holes, tornadoes, Void Rifts and Fortresses, plus summon variants.

  4. Per-spell projectile visuals

    The color, shape, trail and particle of a projectile can be chosen directly in the builder.

  5. Arcane Altar

    An in-world block where players enchant to gain spell components, with mana cost summed per component and scaled by Spell Power.

Compatibility

Latest build for each game version and loader.

26.2v1.0.3+26.2
26.1.2v1.0.3+26.1.2
1.21.1v1.0.3+1.21.1
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Optional 1

ModonomiconModonomicon is an in-game documentation mod inspired by Thaumcraft's Thaumonomicon and Patchouli, and aims to provide the best of both, with some unique flavors.
Optional

Questions

Does Build A Spell need Modonomicon?

No. Modonomicon is listed as an optional dependency, so the mod runs without it.

Does Build A Spell have to be installed on the server?

Yes. Every player and the server need a copy of the mod.

Which game versions does Build A Spell support?

Files cover 1.21.1, 26.1.2 and 26.2 for NeoForge. The latest NeoForge file is v1.0.3+26.2 for 26.2, published 2026-09-06.

More from cyberday

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What the author says

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.
cyberday, on the Modrinth page

Official listing

Owner
cyberday
Published
2026-07-08
Updated on Modrinth
2026-09-06
Facts verified
2026-10-15