This plugin will set a new random loot tables that mimics the SethBling Data Packs. You can create a new random loot tables at a certain time. https://www.spigotmc.org/threads/mysterydrops.398178/ 
Posts by HyperSkeleton
The Aternos forums are now deprecated
Learn more about this change here.
For help regarding Aternos, we recommend you to visit our support center.