Cobblemon: Tier-Scaled Battles

Battles in Cobblemon usually reward raised levels, which can give one player an edge. This Fabric addon sets each Pokémon's level from the tier it competes in, modeled on the tiers used by Pokémon Showdown. Players can take favorites into battles that are balanced by tier, which allows more varied matchups on servers where everyone's team would otherwise be at a different strength.

Tiers are assigned by the Pokémon's form and held items. The author notes give Lucario as an example: holding a Mega Stone places it in the RU tier at level 79, holding the Lucarionite of the Uber tier sets level 73, and holding the Lucarionite Z of the OU tier sets level 75. A command shows the tier-adjusted level of a specified Pokémon, and a form can be checked by adding the form name after the Pokémon's name.

The mod is for Fabric and Minecraft 1.21.1 only, and requires Cobblemon to run. It is client and server, so the server and every player need it. The code is released under CC0 1.0 Universal and is open source; source code and an issue tracker are public.