Unholy Mobs randomly empowers spawning hostile mobs with powerful variant types, making them significantly tougher.

Version 1.2.0 compatibility: Forge 1.20.1, and NeoForge 1.21.1. Install the mod on both the client and server. Older files for Minecraft 1.21.4 and 1.21.8 do not include every feature and fix described for version 1.2.0.

The mod currently introduces four variants of special mobs:

Variant	Default spawn chance
Insane	~1%
Extreme	~0.2%
Grandpa	~0.04%
Silent	~0.008%

Each higher tier includes all strengths of the previous ones and adds more on top. Power grows roughly exponentially between tiers.
Empowered mobs gain a particle aura and a prefix in their name, making them distinguishable from normal mobs.
Natural Unholy variants remain vanilla hostile mobs. Variant Cores can also transform eligible passive creatures, provided they do not already have an Unholy variant.

Enhanced mobs receive:

Increased health, damage, and movement speed
Regeneration, resistance and knockback resistance
On-hit debuffs applied to the player, such as Slowness, Weakness, Poison, Blindness, Wither or Nausea
Special behaviour for the strongest variants, like teleportation, periods of invisibility or sound reduction

Extreme, Grandpa and Silent mobs can teleport with a cooldown. Insane mobs do not teleport. Invisibility and sound suppression are exclusive to the Silent variant.

Improved loot for defeating Unholy mobs:

Significantly more experience
Extra items (ores, resources, rare materials)
Enchanted books with low to high-level enchantments
Special Variant Cores

Advancements & Kill Tracking:

First-kill advancements available for all variants.
Additional advancements track total Unholy mobs defeated at 10, 100, 2,500 and 10,000 kills.

Unholy Mob Variants Modifiers:

Attributes:

Variant	Health	Damage	Speed	Knockback Resistance	Armor and Armor Toughness
Insane	2x	2x	1.3x	+0.25	+4
Extreme	4x	3x	1.6x	+0.5	+8
Grandpa	8x	4x	2x	+0.75	+12
Silent	16x	6x	2.5x	+1	+16

Levels of Permanent Effects:

Variant	Resistance	Regeneration	Fire Resistance	Water Breathing	Dolphins Grace
Insane	1	2	1	1	2
Extreme	2	3	1	1	2
Grandpa	3	4	1	1	2
Silent	4	5	1	1	2

Unholy Creepers become powered and use variant-specific explosion radii: 4 for Insane, 7 for Extreme, 10 for Grandpa and 13 for Silent.

Random events:

Silent Night:

At the beginning of night when the moon rises, there is a chance (~0.1% default) for the night to be "Silent" - if this happens, spawn rates of the silent mob variant are increased 400x, event ends with the sunrise.

Unholy Night:

At the beginning of night when the moon rises, there is a chance (~1% default) for the night to be "Unholy" - if this happens, spawn rates for unholy mobs are increased 10x for each variant, event ends with the sunrise.

Silent Night takes priority over Unholy if both events occur at the same time

Active events end at daybreak and cannot be skipped by sleeping.

Configuration & Commands:

Unholy Mobs allows you to adjust Unholy Mobs spawn rates and chances for random events:

Using "/unholy_spawn_chance" command you can set/get/multiply the spawn chances of each variant:

/unholy_spawn_chance <variant> set <percent> percent - sets the spawn chance to provided percentage.
/unholy_spawn_chance <variant> multiply_times <multiplier> - multiplies current spawn chance for variant.
/unholy_spawn_chance <variant> get - shows you current spawn chance of variant.

E.g.:

/unholy_spawn_chance Insane set 4 percent
/unholy_spawn_chance Extreme multiply_times 6
/unholy_spawn_chance Silent get

Similarly using "/unholy_event_chance" command you can set/get/multiply the chance for specific event:

/unholy_event_chance <Unholy_night|Silent_night> set <percent> percent - sets the event chance to the provided percentage.
/unholy_event_chance <Unholy_night|Silent_night> multiply_times <multiplier> - multiplies the current event chance.
/unholy_event_chance <Unholy_night|Silent_night> get - shows the current event chance.

E.g.:

/unholy_event_chance Unholy_night set 5 percent
/unholy_event_chance Silent_night multiply_times 2
/unholy_event_chance Silent_night get

Note that lower variants take priority when spawning. This means that if the chances are set to 100% for both Insane and Extreme, the mob will attempt to become Insane first, in this case causing its variant to always be set to Insane.

Items & Recipes:

Variant Cores and Swords:

- Insane Core, Netherite Insanity Breaker
- Extreme Core, Netherite Extremeness Blade
- Grandpa Core, Netherite Elder Madness
- Silent Core, Netherite Hushed Blade

Right-click a creature with a Variant Core to apply the matching Unholy variant. A Core cannot replace an existing UnholyType and is consumed after a successful conversion, unless the player is in Creative mode.

Unholy Blades deal special bonus damage to valid Unholy mobs:

Netherite Insanity Breaker: +50% damage against Unholy mobs; grants Strength I while held.
Netherite Extremeness Blade: +100% damage against Unholy mobs; grants Strength I while held.
Netherite Elder Madness: +200% damage against Unholy mobs; grants Strength I while held.
Netherite Hushed Blade: +400% damage against Unholy mobs; grants Strength I, Haste I while held.

Sword and Core Recipes:

"Unholy Mobs" is intended for players who want standard Minecraft combat to be more challenging and less predictable, especially in hardcore or harder difficulty settings.