This changes the first trade of level 1 butcher, mason, shepherd and fisherman. the trade is different depending on what biome the villager is from.(aka biome type).
Note: you can't find swamp or jungle villagers and therefore you have to explore and bring villagers to the biomes to breed them.
How this works is you buy clocks:
v2: 
With clocks you can buy any sherd:
And then you find the correct tool/armor to match:
Note: this was an example where you buy the silk touch pickaxe, and you need that sherd to buy the pickaxe but you can't use it to buy something else.
If you have any feedback please share it with me in the comments!
Here is a guide for if you don't want to guess what villager sells what:
"clock" butcher, plains -> clock
"mace" -> shepherd, desert -> guster_pottery_sherd -> butcher, savanna -> mace
"axe" shepherd, snow -> scrape_pottery_sherd -> butcher, taiga -> axe
"pickaxe_silk_touch" -> shepherd, jungle -> prize_pottery_sherd -> butcher, swamp -> pickaxe_silk_touch
"pickaxe_fortune" -> shepherd, plains -> miner_pottery_sherd -> butcher, snow -> pickaxe_fortune
"sword" -> shepherd, swamp -> blade_pottery_sherd -> butcher, jungle -> sword
"helmet" -> fisherman, swamp -> skull_pottery_sherd -> mason, snow -> helmet
"chestplate" -> fisherman, desert -> explorer_pottery_sherd -> mason, jungle -> chestplate
"leggings" -> fisherman, taiga -> burn_pottery_sherd -> mason, desert -> leggings
"boots" -> fisherman, jungle -> snort_pottery_sherd -> mason, swamp -> boots
!!!one clock is two heart of the sea and two netherite ingots and every sherd costs one clock!!!
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.4, 1.21.3, 1.21.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on CurseForge — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — see the MC Java Mods guides for the full walkthrough.
Villager trades![Datapack] is a free Minecraft Java datapack. Compatible with Minecraft 1.21.4, 1.21.3, 1.21.2, 1.21.1. Downloaded 2,332 times (via CurseForge). Download it and open it directly in the game.