Lexter's Cataclysm

Lexter's Cataclysm

This Datapack/Mod is inspired by L_enders's Cataclysm. It adds dungeons, new weapons, advancements, strucutres to the Vanilla game.

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Lexter's Cataclysm
Update 1.4

About this Mod

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About 🛠️

THIS DATAPACK/MOD REQUIRES ITS RESOURCEPACK

RP on my Account as: Lexters Cataclysm - RP

Lexter's Cataclysm is a Datapack/Mod Inspired by the L_enders Cataclysm mod.
The Datapack adds 14 new custom Items (6 Weapons), 47 new Advancements and 10 new Structures!

Big Item Texture Credits to: mcl_ender (L_enders Cataclysm Mod), VladVF (L_Ender 's Cataclysm Reimagined Pack), Hummel009 (The Rings of Power Mod)

DO NOT use Mods like JEI - They Wont work, because the Mod is just a Packaged Datapack!

THIS DATAPACK IS INCOMPATIBLE WITH ANY OTHER DATAPACK/MOD BY LEXTER

Content ✨

Items

The Incinnerator:

  • Crafting: Smithing-Table: Netherite-Sword, Blaze-Rod, Mystical Power

  • Function(s): Right-Click - Damage Facing mobs with flame Strike, Skeak - Damage Mobs in a radius of 2 Blocks. Spammable

The Void Baswalc:

  • Crafting: Crafting-Table - Shaped: Row 1: Gold-Nugget, Purpur-Block, Amethyst Shard; Row 2: Purpur-Block, Mystical-Energy, Purpur-Block; Row 3: Crying-Obsidian, Purpur-Block, Gold-Nugget

  • Function(s): Right-Click - TP Entitys in Radius of 4-10 Blocks to u - Gives them Wither I Effect. Spammable

The Dark Baswalc:

  • Crafting: Smithing-Table: The Void Baswalc, The Ring of Darkness

  • Function(s): Right-Click - TP Entitys in Radius of 4-12 Blocks to u - Gives them Wither II, Weaknness, Slowness II Effect. Spammable

The Mechanical Blaster:

  • Crafting: Crafting-Table - Shaped: Row 1: Redstone, Iron-Ingot, Redstone-Block; Row 2: Netherite-Ingot, Mystical Energy, Iron-Ingot; Row 3: Obsidian, Iron-Ingot, Redstone

  • Function(s): Right-Click - Damage faicing mobs by 8 hp and Set Blocks, Entitys on Fire. Spammable

The Ring of Darkness:

  • Crafting: Crafting-Table - Shaped: Row 1: Nothing, Gold-Ingot, Nothing; Row 2: Gold-Ingot, End-Crystal, Gold-Ingot; Row 3; Nothing, Gold-Ingot, Nothing

  • Function(s): Right-Click - Damage Mobs in Radius of 4-12 Blocks and give them Slowness Effect. Spammable

Mystical Energy:

  • Crafting: Crafting-Table - Shapeless: Nether-Star, End-Crystal (You will get 3 per Crafting (VERSION 1.2.3+!!!))

The Mechanical Saw:

  • Crafting: Crafting-Table - Shaped: Row 1: Any Button, Redstone, Iron Block; Row 2: Redstone Torch, Mystical Energy, Redstone; Row 3: Netherite Ingot, Lever, Any Button

Ceravnos

  • Crafting: Crafting-Table - Shaped: Row 1: Essence of the Storm, Mystical Energy, Essence of the Storm; Row 2: Chain, Breeze Rod, Chain; Row 3: Same as Row 2

The Mechanical Rocket Launcher

  • Crafting: Crafting-Table - Shaped: Row 1: Black/red Candle, Iron Ingot, Redstone Block; Row 2: Iron Ingot, Mystical Energy, Iron Ingot; Row 3: Wither Skeleton Skull, iron ingot, Chain

  • Function(s): Right-Click - Fire Wither Skull like a wither

Essence of the Storm

  • dropped by Scylla or Find 1 in Structure: Flying Towers

Totem of Thunder

  • dropped by Scylla (10%)

  • Function(s): Right-Click - gives u Health boost 1 when clicked + regeneration 3 for 2 secs, but u lose one Level every time u click, if ur Level is 0 you will get the wither effect

Key of Rain

  • Crafting: Crafting-Table - Shaped: Row 1: Nothing, Gold Ingot, Nothing; Row 2: Netherite Ingot, Ender Eye, Iron Ingot; Row 3: Nothing, Soul Sand / Soul Soil, Nothing

  • Reqired to Summon Scylla

Shulker Body

  • Consumable item dropped by a Shulker

Enderman Flesh

  • Consumable item dropped by a Enderman

Abyssal tear of fear

  • Dropped by Thalassa, Reqired to craft Vythou, Tide Shrine

Wave Armor Trim

  • An Armor Trim dropped by Thalassa

Vythou

  • Crafting: Crafting-Table - Shaped: Row 1: Abyssal Tear of Fear in middle; Row 2: Breeze Rod in middle; Row 3: Same as row 2

  • Function(s): Like an Axe, but more Attack damage, speed

Tide Shrine

  • Crafting: Crafting-Table - Shaped: Row 1: Copper Blocks; Row 2: Iron Bars, Abyssal Tear of Fear, Iron Bars; Row 3: Same as row 1

  • Function(s): When Placed: Ill give you Regeneration II, Water Breathing in a radius of 40 Blocks

Endered Soup

  • Crafting: Crafting-Table - Shapeless: Enderman Flesh, Shulker Body, Bowl

Key of the Sea

  • Reqired to summon Thalassa (same function as "Key of Rain")

  • Function(s): Right-Click - Damage mobs in radius od 6 blocks and give them Slowness 255

Achievements

Vanilla:

There Are many Achievements based on the Vanilla Game like Collecting all dyes.

Custom:

There are Achievements for Collecting the New Custom Items

Structures

Anchient Outpost:

A small Structure with a lot of Loot and Two Shulkers as Protection

Anchient Liberary:

A bigger Structure with very good main Chest and a Secret Elytra Trading Villager

End Village:

Now really a Village, but a good Place to Get food

End Village Ship:

A End City Ship before the Shulkers Potained it. This Structure Contains Vaults, (Open with Empty Maps) Chests and Villagers

Farm Traverns:

These Traverns have 3 Types:

  • Jungle
  • Desert
  • Plains

They all have a Mob (Camel, Panda, Horse) and a Villager

Anchient Cemetry:

Generates in the Pale Garden Biome

There is ONE Skeleton Wolf in each Structure (They can NOT be breedet and can NOT have Babys)

Flying Towers

Generates in the Deep Cold Ocean very rare

There is one Essence of Storm, many Chests and Secret Rooms in every Structure (Flying Towers)

Arena Della Tempesta

Generates in the Luke Warm Ocean (very, very, rare)

There is a Spawner to summon the "Scylla" Boss (Click on the "Boss(es)" tab to see, how Scylla is Summoned)

Sunken Nave Delluomo

Generates in Deep Cold Oceans (very,very,rare)

There is a Spawner to summon the "Thalassa" Boss (Click on the "Boss(es)" tab to see, how Thalassa is Summoned)

Boss(es)

Scylla

  • Summoned in "Arena Della Tempesta"

-> Stand min 1 Block infront of the Spawner Model in the middle of the strucutre,

-> Make sure you have the item "Key of Rain", if not, craft it!,

-> Select the Item in your Mainhand and the Boss will Spawn (The boss is Respawnable)

  • Reqiured (Optional):
    • Prot 3-4 Full Netherite
    • Sharpness 5 Sword
    • Some Ender Pearls
    • Totem(s) (OPTIONAL)
    • Gaps (Op-Gaps)

Thalassa

  • Summoned in "Sunken Nave Delluomo"

-> Stand min 1 Block infront of the Spawner Model in the middle of the strucutre,

-> Make sure you have the item "Key of the Sea", if not, craft it!,

-> Select the Item in your Mainhand and the Boss will Spawn (The boss is Respawnable)

  • Reqiured (Optional):
    • Prot 3-4 Full Netherite
    • Smite 5 Sword (or Sharpness 5, but Smite is better against dead Mobs)
    • Totem(s) (OPTIONAL)
    • Gaps (Op-Gaps)

Updates ✉️

There are always small Updates fixing some Bugs. There are Big Updates like 1.2 adding new Content. The First Versions of This Pack are not Really precised, so please use the Latest Versions!

Available Versions

Lexter's Cataclysm - 1.4.3release
MC 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10fabric, forge, neoforge, quilt
January 12, 2026
Lexter's Cataclysm - 1.4.3release
MC 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10datapack
January 12, 2026
Lexter's Cataclysm - 1.4.2release
MC 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10fabric, forge, neoforge, quilt
October 7, 2025
Lexter's Cataclysm - 1.4.2release
MC 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10datapack
October 7, 2025
Lexter's Cataclysm - 1.4.1release
MC 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9fabric, forge, neoforge, quilt
October 2, 2025

How to Install Lexter's Cataclysm on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set datapack Loader

In the panel under "Egg", select the datapack loader and matching Minecraft version (1.21.10).

3

Install Mod

Open the mod browser in the dashboard and search for "Lexter's Cataclysm". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

datapackfabricforgeneoforgequilt

Minecraft Versions

1.21.10, 1.21.9, 1.21.8 (+3 more)

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Lexter's Cataclysm server crashes on startup – what to do?

Most common cause: wrong datapack version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.10). You can switch loaders with one click in the panel.

Is Lexter's Cataclysm compatible with datapack and fabric and forge and neoforge and quilt?

Lexter's Cataclysm officially supports datapack, fabric, forge, neoforge, quilt for Minecraft 1.21.10, 1.21.9, 1.21.8. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Lexter's Cataclysm – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Lexter's Cataclysm consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install Lexter's Cataclysm with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
Creative Commons Attribution Non Commercial No Derivatives 4.0 International
Server-side
Required

Supported Versions

1.21.101.21.91.21.81.21.71.21.61.21.5