This plugin allows you to automatically apply the Custom Model Data tag when renaming an item in the anvil, which allows you to give the item multiple textures using the resource pack.
1. Download plugin 2. Put the plugin in the plugins folder 3. Restart the server 4. Set up config.yml in the plugin folder (Instructions are there)
Commands: /nocit reload - config reload /nocit change <number> change custom model data of item without an anvil