Name of the plugin you want: Cosmic Addon [AdvancedEnchantments]
Spigot Link: It's a addon for a plugin thats already leaked.
Addon: https://sellfy.com/p/LG18/
Original Plugin...
I only found a version of ItemsAdder from july 2023. But the plugin LoneLibs that Itemsadder requires, crashes on load every time. The developer for LoneLibs is trying to figure it out.