Item Duper

Item Duper adds a powerful late-game duplication factory to Minecraft. Craft the Unfinished Item Duper using End Crystals and the Dragon Egg, finish the machine with obsidian and music discs, then build the correct setup: Item Duper -> Pole -> Item Duper Chest.
Items placed inside the Item Duper Chest duplicate automatically every second while the machine is built correctly. If the chest overfills, the machine ejects its contents and explodes, so automation comes with risk.
This mod is designed as an end-game reward. It is intentionally expensive, requiring rare materials such as the Dragon Egg, End Crystals, music discs, obsidian, redstone blocks, and netherite scrap