Help with first steps for a mod | Secondary Enchantments

Hey forum people, 

I want to make an enchantable item kind of similar to enchanted book but when combined with a piece of armor or tool (preferably in an anvil but I could make a recipe based crafter work if it's too much work) can add a new line to items with the enchantments from this new item, allowing for normally incompatible or extremely overpowered achievements without actually changing the vanilla enchantment limits all that much

I'm new to modding and MCreator as a whole, but I've figured out a few bottlenecks to getting it to work:

1. Making an item that can get any enchantment and can use multiple (compatible) enchantments
2. Allowing the item to combine with and enchant other items
3. The secondary line of enchantments
4. Combining 2 and 3

Feel free to tell me if my idea is extremely difficult in MCreator or Minecraft mods in general, if modding is the way to go for this, or if theres something already in existance that can do practically this.