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Calamities are crude amalgamations of bodies created for one thing: destruction. In the hierarchy, they act as commanders, and are the top tier of mobs in terms of stats. They're massive behemoths of flesh and bone that come in all different shapes and sizes. They're capable of tearing through anything, be it a village, your home, or even the very earth you stand on. Depending on what they're spawned for, Calamities will be specialized for a certain type of terrain: land, ground, water, or air. They're dispatched to complete whatever goal the hivemind gives them. There are a total of five mobs in this tier.
Calamity Mobs
Spawning
Spawned when a Womb reaches one hundred biomass or when a Womb is killed in its final growth stage, in which it will spawn a Calamity at 50% health.
Certain spawn conditions will dictate what type of Calamity spawns from a Womb. There are three main types, and each class can have a max of four Calamities. They go as follows:
Land: Default spawning; will spawn a land Calamity if other conditions aren't met. Calamities in this class include the Sieger and Howitzer.
Ground: The parent signal is below Y=63. The Hohlfresser is the only ground Calamity.
Water: The parent signal is below Y=70 and a water requirement needs to be met. In a 14x14x14 area around the parent signal location there needs to be seven or more water blocks. If there are, a water Calamity spawns. The Gazenbreacher is the only water Calamity.
Air: If the parent signal location is at Y=120+, an air Calamity spawns. Calamities in this class include the Hindenburg and Howitzer.
There's a 30% that the Womb will spawn the incorrect Calamity type.
Unique Mechanics
Influence
Calamities are influenced by signals and objectives (explained on the Proto Hivemind page.)
Rooting
Becoming 'rooted' is a mechanic exclusive to Calamities that can only occur when they have no kill points, are below 30% health, and don't currently have a target. When in the rooted state, they become immobile and various spore foliage blocks appear below them on the ground. These foliage blocks are not actual blocks and are instead apart of the Calamity's texture. They gain one kill point every minute when rooted and they use it for Regeneration and will eventually become unrooted if any of the three parameters mentioned before are not met. They can also become unrooted if hit. Air Calamities will sometimes land when idle, so they aren't excluded from becoming rooted.
Adaptations
Every Calamity is capable of an 'adaptation,' which is a stronger version of themselves that changes the Calamity's texture and has its own unique gimmick. They will become this when certain requirements are met. These requirements will change depending on the Calamity adaptation (e.g.: if the Gazenbreacher spends enough time in lava, she will become her crispy adaptation that chars the texture and makes her immune to fire.) Each Calamity can only have one adaptation, no more.
Spore Bursts
All Calamities can perform 'spore bursts,' which summons a Scent, gives various buffs to nearby allies, and gives various debuffs to nearby non-spore mobs. Depending on the Calamity will depend on the given buffs and debuffs. This has a range of 16 blocks. When performing a spore burst, all Infected, Evolved, Hyper Evolved, Scampers, and Gastgebers within a 16 block radius will receive 0 - 3 kill points. Additionally, when doing a spore burst, all CDUs within a 16 block radius will be clogged, meaning they no longer work. They can be fixed by breaking them and placing them back down. Calamities have a 0.3% chance to perform this ability every tick and can only be successful if the target is within ~14.4 blocks. There's also a 20% chance a Calamity will perform a spore burst when taking cold damage. When performing a spore burst, Calamities will be unable to move for a few seconds.
Summoning Scents
Different from spore bursts, Calamities have a 0.25% chance every tick to spawn a Scent while in combat.
Summoning Mounds
When reaching an objective, Calamities will drop a Mound at age 1.
Body Parts
Some Calamities can drop parts of their body when that part is damaged enough. These parts (while still on the body) have their own hitbox and usually take increased damage. The body part falls off as its own entity and will spread Big Mycelium Growths and Small Mycelium Growths around. The Calamity itself will lose that part of its model and some ability relating to the body part will be revoked (e.g.: when the Sieger loses its tail, it loses its ranged capability.) The Calamity can gain back the body part(s) by healing to 100% health.
Increasing Armor
Non-flying Calamities are able to increase their own armor points by killing skeletons. Each skeleton is worth one armor point, or 0.5 bars. There is no cap on how many armor points they can gain from this.
Summoning Vigils
When below 50% health, Calamities are capable of summoning Vigils to aid them in battle.
Chunk Loading
When following signals, Calamities will load the chunk they are currently in.
Death
When killed, multiple Blocks of Biomass, Blocks of Calcified Biomass, Blocks of Sickened Biomass, Rooted Biomass, and Human Remains will appear as falling entities where the Calamity died and fall to the ground. The only other mob that can do this is the Proto Hivemind, which places different blocks. Additionally, multiple Corpse Pieces will fly out from the Calamity.
Each Calamity has a set amount of Corpse Pieces they can drop, however it's only a chance for a specific Corpse Pieces to drop. The chance depends on the Calamity, and the values are listed below. These Corpse Pieces carry the regular drops of the Calamity, and have a 20% to drop a Reforged Biomass item when left or right clicking the Corpse Piece. This drop only occurs as a last drop when the inventory of the Corpse Piece is empty. The chance is boosted to 30% when right clicking using a Reaver, and also it doesn't have to be the last drop. If a Corpse Piece isn't collected after 5 minutes, it will disappear and place down multiple Human Remains in its place, or a 10% chance for an Age 1 Mound.
Sieger - 75%
Howitzer - 65%
Hohlfresser - 100%
Gazenbreacher - 85%
Hindenburg - 75%
Effect Immunity
All Calamities are immune to debuffs that are not above amplifier one.
Custom Death Messages
All Calamities have a list of custom death messages, being;
"<player> was eaten by <Calamity>"
"<player> was crushed by <Calamity>"
"<player> was dismantled by <Calamity>"
50% of the damage Calamities do is custom 'calamity damage 1,' this solely effects the death message. If it fails, 50% chance to deal 'calamity damage 2.' If that fails, 50% chance to deal 'calamity damage 3.'
Shared Aspects & Capabilities
Calamities will attack mobs with Infected forms, golems, and most hostile mobs.
Calamity mobs inflict Mycelium Infection II for 30 seconds when dealing melee damage.
Can fall from up to 28 blocks before taking fall damage.
Calamities can be affected by the Womb Crafting System.
Essentially has Sweeping Edge, as all their melee attacks have an AOE.
Like horses, Calamities are capable of stepping up blocks, meaning they don't have to jump to go up one block.
The minimum amount of true damage a Calamity can deal to a target is 30% of its base melee damage, however the Womb Crafting System can increase that.
Calamities do not attempt to group together, nor do they follow mobs. However, Evolved mobs will follow them.
Able to use kill points to give themselves buffs, such as strength or speed if the target is running away. They can also give themselves regeneration if they are low on health.
Capable of breaking blocks with a hardness of five or below.
Trivia
Calamities are the strongest mob in the game and will remain that way. Nothing stronger will be added. The only exception to this is Adaptations.
Some Calamities have Christmas textures that activate near the special time of year. (E.g.: The Santa Sieger, which is wearing a Santa hat.)
All Calamities have canonical genders and sexualities (e.g.: the Sieger uses they/them pronouns and has an unknown sexuality.)
Due to how Calamity deaths are handled, they are not properly tracked in the Minecraft milestone menu.
The Hohlfresser's Corpse Pieces have a 100% chance to spawn because the creator of the mod, Harbinger, needed to get all the segment variants and inflation values right.
Gallery
Getting the Corpse Pieces to render in-game
Ditto.