HeavyCoreChance
HeavyCoreChance lets server owners configure the drop chance of the Heavy Core from Ominous Vaults in Trial Chambers.
The Heavy Core has a ~7.5% chance to drop by default — making the Mace one of the most frustrating items to obtain in vanilla survival. With this plugin you can adjust that to whatever suits your server, without touching a single loot table or data pack.
Support
If you find any bugs or have any suggestions join my Discord Server.
Features
- Set the Heavy Core drop chance to any value from 0% to 100%
- Defaults to 7.5% — the exact vanilla rate — so nothing changes until you want it to
- Reload the config live with
/hcc reload, no restart required - All other Ominous Vault loot is completely untouched
Config
# plugins/HeavyCoreChance/config.yml
# 0.0 = Heavy Core never drops
# 7.5 = Vanilla default (~1 in 13 vaults)
# 100.0 = Heavy Core always drops
heavy-core-drop-chance: 7.5
Commands & Permissions
| Command | Permission | Default |
|---|---|---|
/hcc reload |
heavycorechance.reload |
OP only |
Requirements
| Server software | PaperMC |
| Java version | 1.21.x |
License
© 2025 JustBuddy. All Rights Reserved.
The compiled JAR is free to download and use on your server. The source code is available via my Patreon.
Purchasing grants you a personal, non-transferable license to view and modify the source code for private use only. This license is granted to the purchasing account only and may not be transferred to another person.
You may NOT redistribute or publish the source code, resell or relicense it, or share your copy with others. Violation of any of these terms immediately terminates your license and you must delete all copies of the source code.
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21, 1.21.1, 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 Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as HeavyCoreChance-1.0.0.jar — drop this file into the mods folder
- Download size: 7 KB
- Download link checked 6 Sept 2026 — working
These come from our own check of the pack file, not from the source page.