
Lots of Heavy Cores
This mod increases the overall chances of getting multiple heavy cores from a single ominous vault.
Screenshots


About this Mod
Heavy Core Automation
Guaranteed Heavy Core drops from every Ominous Vault in Trial Chambers.
Lots of Heavy Cores is a lightweight Fabric mod designed for players who want a more consistent and rewarding experience inside Minecraft’s Trial Chambers. In vanilla gameplay, Heavy Cores are extremely rare and tied to multiple layers of RNG across several different ominous reward tables. This mod removes that randomness entirely by ensuring that every Ominous Vault you open will always drop a Heavy Core, no matter which variant of the vault or reward table the structure uses.
Minecraft 1.21.11 introduced a complex set of loot tables for Trial Chambers. This mod automatically detects all of those ominous reward tables and injects a guaranteed Heavy Core into each one. The result is a predictable progression path for players who want to avoid the frustration of running dozens of chambers without seeing a single core.
This mod (is):
- (Currently) only works offline
- Compatible with vanilla clients
- Lightweight & safe
Heavy Core Automation ensures that every ominous vault feels rewarding and worth the effort.
Available Versions
How to Install Lots of Heavy Cores on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).
Install Mod
Open the mod browser in the dashboard and search for "Lots of Heavy Cores". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.11
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Lots of Heavy Cores server crashes on startup – what to do?
Most common cause: wrong fabric 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 (1.21.11). You can switch loaders with one click in the panel.
Is Lots of Heavy Cores compatible with fabric?
Lots of Heavy Cores officially supports fabric for Minecraft 1.21.11. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Lots of Heavy Cores – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Lots of Heavy Cores 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.
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Install Lots of Heavy Cores with just one click on your server.