ModsJava
Illusion Onslaught Mod (1.20.1) – Master Elemental Magic Against Dark Illagers
Java mod listed for Minecraft 1.20. Downloads from the MC Java Mods app on Android.
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Illusion Onslaught Mod introduces elemental magic, a mana system, and dangerous illager foes to your survival world. It brings the unused Illusioner into village raids alongside fresh attacks and minion summons. Players can craft spellbooks, collect ancient scrolls, and battle dark cultists across new structures. A flying boss encounter also awaits those who dare to awaken it at dark altars.
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Features:
- Adds a mana meter next to health and hunger bars to fuel spellcasting.
- Introduces the Alchemy Table crafting block to make spellbooks using scrolls, spirit dust, and experience levels.
- Features 15 craftable spellbooks split across Fire, Water, Earth, Air, and Spiritual classes.
- Brings the Illusioner mob directly into village raids with new clone attacks and spirit summons.
- Spirits inflict a Confusion status effect that slows players and scrambles movement controls.
- Spawns Cultoligers near abandoned cult ruins that shoot dark projectiles and enter a rage state at low health.
- Drops useful crafting ingredients such as Ominous Cloth, Occultive Skulls, and Mana Potions from cultist mobs.
- Summons the Chaosbringer boss at an Occultive Altar using an Ominous Sacrifice.
- Adds new mage armor sets and ancient chronicle items for spell progression.
How to Use:
- Defeat Spirits at night or slay Illusioners during raids to gather Spirit Dust and Antique Chronicles.
- Find Elemental Scrolls in newly generated cult structures throughout the world.
- Build an Alchemy Table and spend at least 3 experience levels along with scrolls to craft spellbooks.
- Hold a spellbook and use your primary or secondary attack buttons to cast spells at the cost of mana.
- Locate an Occultive Altar inside cult ruins and place an Ominous Sacrifice to challenge the Chaosbringer boss.
Screenshots:












Illusion Onslaught Mod Download Links
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.20.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: In MC Java Mods, or directly above on this page.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
File checked by MCModsHub
- Downloads as 464962.mcaddon
- Download size: 5.5 MB
- Download link checked 22 Sept 2026 — working
- Mirrored on our own servers — the download does not depend on the original host
These come from our own check of the pack file, not from the source page.