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Eldritch Expansions

by morsecode_guy

Eldritch Expansions is a NeoForge addon for Iron's Spells 'n Spellbooks that adds seven spells built around mining, mobility and chaotic combat.

NeoForgeClient and serverMIT License1.21.1

What it does

The addon adds seven eldritch-themed spells that work with the Iron's Spells 'n Spellbooks spell system. Eldritch Spells adds fifteen new entries to the spell list, and they are cast like the base mod's own. Eldritch Expansions requires Iron's Spells 'n Spellbooks to run.

Each spell is built for a specific job: one clears ore, one moves the caster underground or back to the surface, one changes body size, and others control mobs or call down strikes. The mod is distributed under the MIT License and is not open source. Servers that run it need every player to install it too. Files target 1.21.1 on NeoForge, with 0.4.2 as the latest beta release from 2026-05-10.

Key features

  1. Abyssal Maw

    Casting carves a 3x3 plane out of the block being looked at, shredding stone and ore in about half a second, with Fortune III applied automatically.

  2. Catacomb Step

    An escape spell that scans for the nearest one-by-two underground opening and teleports the caster inside, or sends them to the surface when cast while looking up.

  3. Feral Distortion

    A brief surge of speed and strength turns the caster into a fast wrecking ball for a few moments.

  4. Mutable Visage

    Changes the caster's physical scale in half-step increments, from a massive tank to a small body that slips through tight gaps, plus a heavy ground slam from a falling giant form.

  5. Profane Bond and Harness Heavens

    Profane Bond enthralls nearby creatures as temporary allies, including tamed pets whose loyalty it switches. Harness Heavens charges the caster with celestial energy and chains meteor strikes across up to fifteen marked targets.

Compatibility

Latest build for each game version and loader.

No stable releases
Every published file is a beta or alpha build.
1.21.10.4.2
ReleaseBetaAlphaNot available

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

Questions

Does Eldritch Expansions need Iron's Spells 'n Spellbooks?

Yes. Iron's Spells 'n Spellbooks is required, and the addon is built on top of its spell system.

Is Eldritch Expansions available for Forge?

No. Files are published for NeoForge only, for game version 1.21.1.

Do both the server and players need the mod?

Yes. The server and every player need the mod installed.

Are the spells balanced for multiplayer?

The author text describes each spell's function. Compatibility with other spell addons is not covered on the Modrinth page.

What the author says

This addon expands the Iron’s Spells ‘n Spellbooks arsenal with seven new eldritch-themed spells designed for utility, mobility, and chaotic combat. Abyssal Maw: Carves out a 3x3 plane wherever you look, shredding stone and ore every half-second. It comes with built-in Fortune III and automatically pulls all drops…
morsecode_guy, on the Modrinth page

Official listing

Owner
morsecode_guy
Published
2026-05-03
Updated on Modrinth
2026-05-10
Facts verified
2026-10-15