Immunity Accessories

Cursed crystals and charm amulets that react to harmful potion effects.
When a mob or player dies, crystals may drop based on the debuffs they inflicted or had active. Wear charm amulets (in Curios slots) to become immune to specific effects.

Creative Tab Requires Curios API.

Cursed Crystals

Every harmful effect (like Poison, Wither, Slowness) has its own crystal. These crystals drop in two ways:

When a mob dies – if that mob previously hit you with a harmful effect, it may drop the corresponding crystal. The mob is tracked per player, so only effects it actually applied count.
When a player dies – for each harmful effect active on you at death, there is a chance to drop its crystal.

All crystals are indestructible – they never burn in fire/lava, never get destroyed by explosions, and never despawn. They lie on the ground until picked up.

Drop chance is configured globally (default 0.1% per eligible effect).

Charm Amulets

Each amulet protects against one specific harmful effect.
Equip it in a Curios slot, and that effect can no longer be applied to you – it's completely blocked.

Effect

Attributes

Amulets exist for every effect that has a corresponding cursed crystal, so the set expands automatically if other mods add new effects.

Ingot for Amulet

Craft

Configuration – `config/immunity_accessories.toml`

[immunity_accessories.cursed_crystals]
    # Chance (0.0-1.0) for a cursed crystal to drop when killing a mob that inflicted a debuff. Default: 0.001 (0.1%)
    drop_chance = 0.001

Compatibility

Immunity Accessories automatically registers crystals and amulets for harmful effects from the following mods (when present):

Minecraft (vanilla) – 12 effects
Apotheotic Additions – 1 effect
AttributesLib – 4 effects
Born in Chaos – 22 effects
Brewin and Chewin – 1 effect
Cataclysm – 9 effects
Create Confectionery – 1 effect
Create Nuclear – 1 effect
Enemy Expansion – 3 effects
Mowzie's Mobs – 1 effect
Simply Swords – 12 effects
Supplementaries – 2 effects
TFMG – 1 effect
Twilight Forest – 1 effect
Vinery – 1 effect

The list is dynamic: crystals and amulets are only created for effects whose source mod is actually loaded.