Lets players reset Trial Chamber Vaults for reuse. If the Trial spawners can reset, why not vaults too? This gives players a way to farm heavy cores for maces.

New update v1.0.1
You can now choose between having no delay and just resetting the Trial Vault as many times as you want or
Set your own custom delay on when players can reset Trial Vaults.

Required dependency plugin:
https://www.spigotmc.org/resources/rtag-api-to-edit-block-entity-item-nbt-1-8-8-1-21.100694/