Terraclysm

NOTES:

A LOT was changed, removed, and added in this version, so consider it a soft reboot. I was going to wait until Terraclysm's full release to remove Caverns and Chasms, but it had to be removed early due to constant crashes because of the new Minecraft updates added by Vanilla Backport.

Caverns and Chasms terrain blocks will convert to their vanilla counterparts, so worldgen will be fine, but player placed blocks will not. I recommend loading your world in the previous version and replacing any Caverns and Chasms blocks in builds you like.

Removing Caverns and Chasms also helped reduce lag a bit, leaving room for another enemy expansion mod in future updates (likely Skarrier Mobs, if it isn't too laggy/buggy during testing).

Old worlds will work normally and your items are safe, but your questbook and teams will reset since the modpack now uses a different system. I've also ensured that every quest works correctly since a couple of them were using advancements from long removed mods.

ADDED:

• Quark - Midori Refresh RP
• Creeper Overhaul RP
• Creeper Overhaul x Fresh Animations RP
• Drodi's Illagers x Fresh Animations RP
• Shutter Up! (a returning mod, dunno why I removed it tbh)
• EMF Compat Irons Spells
• EMF Compat Better Combat
• Slate Core
• Slate Early Window
• Slate Quests
• Slate UI
• Slate Teams
• Slate Config
• Living Wind (simulates wind for particles, including most of the modded ones)
• Typing Animation
• OWorld2Create (game no longer tries to create a world when the player has no worlds, makes onboarding feel less laggy)
• HoldMyGui (what it says)
• Tools On My Back (what it says)
• Fluidium (entiy tick culling but for fluids)
• Immersive Optimizations
• ByePregen
• Terramity x Tide [second terramity expansion just hit :O]
• Put A Plug In it! (memory leak fixes)
• Debugify Reforge (does what it says)
• SaveMyRecipeBook (NERB minus the dependencies)
• BiomeSpy
• Lumenite (multithreaded lighting)
• Not F3 (disables debug overlay keybind, Slates is more informative)
• FastSpawner (hides spawner mob model saving a good 10-20 fps in dungeons, use the Jade keybind to see what mob will spawn, or just enable shift to temp enable in settings)

TWEAKS:

• Max mana attribute now defaults to 0 instead of 100, all spellbooks now provide an additonal +100 mana (so that players that dont want to use magic dont have to see the mana bar every time they respawn)
• Day and night length are now equal (daytime lasted 13k ticks before, now they're both 12k)
• Lowered cloud height when using shaders to 192 and second layer to 384 (was 312 and 624 before)
• Enchantment removals now use Reliable Remover instead of Quark (should work better)
• Blacklisted Hedge's Bestiary gild gliders and Terramity echo bugs from the dynamic spawning system
• Disabled the intimidation enchant from Domestication Innovation (overpowered against bosses)
• Disabled horse transparency (fixes an issue with them turning yellow when looking down while riding them)
• Disabled player horse riding leg animation (the leg animation continued playing when using carts)
• Disabled Terramity and Goety snow brick blocks (Ecologics will be the main one)
• Disabled Mowzies Mobs spears
• Disabled the trembling effect from Terramity (looks weird and bugs out animation mods)
• Disabled weather notifications (they appeared even in dimensions without weather, it breaks the no screen clutter rule too)
• Disabled the Iron Chests copper chest, Minecraft's copper chest will take its place
• Replaced Terramity cardboard recipes with Create cardboard
• Renamed Terramity cardboard items to corrugated cardboard
• Renamed TerramtyxTide poseidon trident to oceanus's fork (Olympus mod already adds a poseidon trident)
• Advancements now appear in the questbook (this breaks the no filler quests rule, but theyre technically not quests, soooo)
• Questbook appearance can now be switched between 2d and 3d
• Minimap no longer requires a depth gauge to be displayed. It is off by default but can be toggled in the radial menu under the utilities section (to reduce screen clutter)
• Minecraft spears and Olympus spears no longer use better combat attacks (BC makes spears do no damage and i doubt its getting fixed for 1.20.1 so best thing to do is break the weapon attribute for it)
• Cataclysm coral spears can now be crafted with a netherite spear, coral chunks, and pearls,
• Cataclysm coral bardiches can now be crafted with a netherite halberd, coral chunks, and pearls
• Cataclysm ancient spear can now be crafted with topaz, bloodletter halberd, and koboleton bones
• Gold armor no longer provides a movement boost
• Fixed green fairies having an absurdly high spawn rate (only blue and pink ones had the fix)
• Fixed cardboard group stack not working
• Fixed chorusent playing the wrong theme
• Fixed frostbitten golem's theme cutting out mid fight
• Fixed the fog of doom and despair consuming the world when near a Candy Cavity biome
• Buffed Ender Keeper health from 350 to 500 (too much aura to die quickly)
• Disabled Gnetum optimizations for the Devouer of Gods radar
• Reenabled Gnetum optimizations for the hotbar and experience bar (doesnt need uncapped framerate now that they dont have fancy animations)
• Elytra now uses vanilla durability system (armor chestplates that have elytra capabilites are unaffected to encourage crafting them)
• Reduced katana dashes from 3 to 2 and reduced movement speed boost from 7 to 4%
• Maces now provide +12% armor shred but reduce movement speed by 5%
• Reenabled the recall spell from Irons Spells
• Opposing Force ramblers will now only spawn post nether
• Structures from Goety and Box of Structures that used Goety snow bricks now use Ecologics snow bricks
• Crocodiles and plombos no longer spawn in oceans
• End Remastered eyes that are stored in your hotbar will no longer break when dying
• Reduced chances of mr pumpkin and pumpkin dunce dropping an accursed soul from 100% to 20%
• Twisted Warden no longer summons Terramity echo bugs (Spider Overhaul sculk spiders look better)
• Players can no longer pickup walrus
• Previous held tools will be shown on the players back, tools will use the inventory sprite to avoid inconsistent pixel sizes
• Added Good Lookin' Ground compat for Terramity, Goety, Create, and Irons Spells overworld ores
• Deadzoned by ENNWAY! now plays when fighting illager minibosses
• KEEN EDGE by Krzysztof Pikes now plays when fighting the Ender Keeper
• Extremely cold biomes now have their own music pool
• Added Satchel by J.R. Weiss to the daytime and menu music pool
• Added Damp moss mountain door, Glade, Healing dagger, and Knit for dreamers by Tottomori to the nightime music pool

UPDATED:

• Icy's Better Horses (can finally update it since Caverns and Chasms is gone)
• Vanilla Backport (Mounts of Mayhem, Copper Age, Wilderness Bound, and tiny part of the Tricky Trials update)
• Ecliptic Seasons
• AsyncParticles (bugfixes)
• Animal Weights (bugfixes)
• Mob Spawn Fix (bugfixes)
• Fresh Animations
• Collections Of Optimizations (bugfixes)
• Despawnings (bugfixes)
• Book of Familiars (bugfixes)
• Olympus!
• Reliable Remover (bugfixes)
• Craft & Find (bugfixes and optimizations)
• Not Enough Animations (bugfixes)
• Particle Rain (bugfixes)
• Fzzy Config
• Windy
• EMF Compat Core
• Gnetum (bugfixes)
• Entity Culling (bugfixes)
• Born in Config (bugfixes and config UI)
• Born in Chaos
• Ambient Sounds (bugfixes)
• Supplementaries
• Create:LazyTick
• Legendary No More
• Polymorph
• Sophisticated Backpacks
• Sophisticated Backpacks Create Integration
• Sophisticated Core
• Advanced Loot Info
• Advanced Core Info
• Structurify - Structure Control
• Neruina
• Eggcelent (Compat)
• Platform

DOWNGRADED:

• FastChunkGen
• Modernfix
• Everycompat
• Moonlightlib
• Reliable Remover 
• Reliable Recipes

REMOVED:

• Caverns and Chasms
• Cataclysm x Caverns & Chasms compat
• MusicDiscMaker (its a good mod but its better if players download it themselves rather than forcing it)
• MusicDiscMaker Retextured
• Epic Structures: Dungeons (lags the game too much on initial world creation)
• Alexs Mobs (Primal is more minecrafty)
• Enderman Overhaul (item bloat)
• Creeper Overhaul (using the resource pack version with FA support instead, works way better too)
• Immersive Pillagers (some of its items were too overpowered at farming raider loot)
• Fast Event (redundant)
• Structure Essentials (covered by BiomeSpy)
• NotEnoughRecipeBook (covered by SaveMyRecipeBook)
• Shatterlib
• Fresh Animation Player Extension (covered by EMF Compat Core)
• FixGPUMemoryLeak (redundant)
• Advanced Worldgen Info (makes load times take too long)
• Traversable Leaves (bugs out boss pathfinding and reallly doesnt look good with leaf culling. Players can still pass through leaves when riding horses.)
• GeckolibBetterFps (CoO does the same thing)
• Configured (covered by Slate)
• Simple Menu (covered by Slate)
• Custom Credits
• Collective
• Keybind Atlas (covered by Slate)
• EaseGUI (covered by Slate)
• Immersive Hotbar (bugs out with Overflowing Bars mod)
• Fancy Notify (covered by Slate)
• Fancy Toasts (covered by Slate)
• Cycling Splash (covered by Slate)
• Game Menu Remove GFARB (covered by Slate)
• MQA - Misanthropy's FTB Quest Additions (covered by Slate)
• Better Search (bugs out EMI now)
• FTB Quests (covered by Slate)
• FTB Teams (covered by Slate)
• FTB Library
• FTB XMod Compat
• NCL Skins (ill put a replacement later)
• Teams Friendly Fire Addon (covered by Slate, i think)
• Cherished Worlds (covered by Slate)
• Searchables (covered by Slate)
• Controlling (covered by Slate)
• Reliable Advancements (covered by Slate)
• Compact F3 Plus (covered by Slate)
• World Play Time (covered by Slate)
• Legendary Tabs (covered by Slate)
• YUNG's Menu Tweaks (covered by Slate)
• Better Quests UI (covered by Slate)
• Suren's FTB Quests (covered by Slate)
• Gamestages (covered by Opposing Force)
• Ping Wheel (covered by Slate)
• Sunken Spires (doesnt generate in the right spots most of the time)
• Sophisticated Tab
• Kiwi
• Golem Overhaul (vanilla copper golems do more)
• Resourceful Lib
• Noise Boost (covered by FastChunkGen, ByePregen, and Structure Layout Optimizer)
• Wavy Banners 1.0 (messes with mods using the banner model)
• Just Normal Cats (messes with the title screen cat)