CobbleCatalyst
by norevex
CobbleCatalyst pairs Cobblemon trainer battles with Cataclysm boss fights, so a boss can pause its fight until a player wins a trainer challenge.
What it does
Each Cataclysm boss can be given a health threshold in its datapack configuration. When the boss drops to that level it becomes invulnerable and frozen, and the fight resumes only after the players defeat a Cobblemon trainer challenge. The trainer teams are defined in datapacks, with Pokemon, moves, abilities, held items and levels set per trainer, and an optional fixed-level setting keeps the challenge at a constant strength.
The mod is built for NeoForge on Minecraft 1.21.1 and is distributed with the Cobblemon and Cataclysm mods as its required dependencies. Pokemon level automatically to match the player party, and the trainer challenge scales with the number of players. Win, loss, forfeit and disconnect each have a defined outcome: a player who leaves or forfeits can be punished, the boss resets and nearby participants are affected, and a challenger who stays away too long is ignored so the fight can continue. Files are open source under the GNU Lesser General Public License v3.0 only, and the source code is public.
Key features
Health-threshold phases
A Cataclysm boss can freeze at a set health level and resume only after its trainer challenge is won.
Datapack trainer teams
Trainer Pokemon, moves, abilities, held items and levels are defined in datapacks for each boss.
Level scaling
Pokemon levels adjust to the player party, and an optional fixed-level setting turns scaling off.
Multiplayer scaling
The trainer challenge grows with the number of players, adding trainers and support mobs.
Win and loss handling
Forfeit, disconnect and timeout each produce a set result for the boss and nearby participants.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Cobblemon Trainers is a NeoForge and Fabric trainer pack for 1.21.1 under the CC0 1.0 Universal license, and it is open source. Cobblemon Trainer AI Switch Fix is server-side only, open source under the MIT License and published for 1.21.1, so clients need nothing extra. CobbleCatalyst is a client and server mod for NeoForge only, tied to boss phases rather than standalone trainers.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| CobbleCatalyst | NeoForge | 1.21.1 | Client and server | 2026-06-22 |
| Cobblemon Trainers | Fabric and NeoForge | 1.21.1 | Client and server | 2026-10-06 |
| Cobblemon Trainer AI Switch Fix | Fabric and NeoForge | 1.21.1 | Server-side only | 2026-02-03 |
Questions
Does CobbleCatalyst need Cobblemon and Cataclysm?
Must the server and every player install it?
Which loader and version does it support?
Can trainer levels be fixed?
In the catalog
CobbleCatalyst is one of 11,058 Mobs mods on ModsFinder, and one of 4,974 Mobs mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
More from norevex
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What the author says
CobbleCatalyst adds Cobblemon trainer battle phases to Cataclysm boss fights. When a boss reaches its configured health threshold the boss becomes invulnerable and frozen. Players must defeat a Cobblemon trainer challenge to resume the fight. If they lose, forfeit, disconnect, or ignore the challenger for too long…
Official listing
- Modrinth page
- modrinth.com/mod/cobblecatalyst
- Owner
- norevex
- Published
- 2026-06-18
- Updated on Modrinth
- 2026-06-22
- Facts verified
- 2026-10-15