minecraft datapack reintroducing unobtainable items, blocks and entities back into flat worlds
feature list: https://docs.google.com/document/d/1kDePxFsGdQMzFFQmNZgUuY4iWK_eiS_NeqKT9ppP9wU/edit?usp=sharing
download from curseforge: https://www.curseforge.com/minecraft/mc-addons/flat-unobtainables