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Spell Vulnerabilities

Spell Vulnerabilities

MOD
Configure custom resistances and vulnerabilities for mobs to different spell schools
by DefinitelyNotADoctor
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70,987 downloads
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Updated Oct 14, 2026
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Addons Magic Mobs Server Utility
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Spell Vulnerabilities
is lightweight Fabric mod that gives you complete control over how each mob in your world resists or succumbs to different schools of magic spells. 
With just a few lines in a simple JSON config, you can tune every creature’s Fire, Frost, Arcane, Healing, Lightning (and more!) affinities.

Key Features:

Per-Entity Tuning
Define resistances and vulnerabilities on a per-mob basis or a list of mobs that will share the same modifiers
(can also include entities from other mods). 
Want Zombies to take 75% less Soul damage but 190% more Arcane damage? Easy:

 "entities": [
        "minecraft:zombie"
      ],
      "modifiers": {
        "spell_power:soul": -0.75,
        "spell_power:arcane": 1.9
      }


All Major Spell Schools

Support for any spell_power:<school> attribute from Spell Engine & Spell Power Attributes:

spell_power:air
spell_power:arcane
spell_power:earth
spell_power:fire
spell_power:frost
spell_power:healing
spell_power:lightning
spell_power:soul
spell_power:water

 

Configurable
Everything loads at startup from config/spell_vulnerabilities.json. —just edit the JSON and restart.
Come with 2 premade entries for the Blaze, Ghast and Piglin (25% fire spell resistance, 50% frost spell vulnerability) 
and the Enderman (75% arcane spell resistance):

{
  "enable_button": true,
  "button_x": 16,
  "button_y": 4,
  "vulnerabilities": [
    {
      "entities": [
        "minecraft:blaze",
        "minecraft:ghast",
        "minecraft:piglin"
      ],
      "modifiers": {
        "spell_power:fire": -0.25,
        "spell_power:frost": 0.5
      }
    },
    {
      "entities": [
        "minecraft:enderman"
      ],
      "modifiers": {
        "spell_power:arcane": -0.75
      }
    }
  ]
}


Stylized List
A new button in the player inventory that open a new screen with neat list of all the entries from the config, come with a search bar to search by entity/mobs name!



Require
Spell Engine & Spell Power Attributes [Fabric]

Recommended with Wizards (RPG Series), Elemental Wizards (More RPG Classes) and other mods that use spell power attributes.
To get entities/mobs id recommend to use Data ID Dumper [the id's will be in the entities_ids file]


This mod is just one simple, short mixin, screen class and gson config✨

spell_vulnerabilities-1.2
MC Fabric, 1.20.1
Release 2025-07-16 Get
spell_vulnerabilities-1.2
MC Fabric, 1.21.1
Release 2025-07-16 Get
spell_vulnerabilities-1.1
MC Fabric, 1.20.1
Release 2025-07-13 Get
spell_vulnerabilities-1.1
MC Fabric, 1.21.1
Release 2025-07-13 Get
spell_vulnerabilities-1.0
MC Fabric, 1.21.1
Release 2025-07-12 Get
spell_vulnerabilities-1.0
MC Fabric, 1.20.1
Release 2025-07-12 Get

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