In this datapack there are added a few things:
Boss drops that are used to give special abilities to your tools.
Custom chest loot tables so you can find custom items in the world.
Custom totems to boost your abilities.
Advancements to tell you what to expect and an inside game of obtaining, abilities and lore of every item.
And more to come...
This pack is something I do on my free time, so expect it to be updated slowly.
Although, if there are any bugs, you are welcome to tell me, as for now only on the comments though.