+xx Orb affix increase your Orb Skill on Skill Tree.U can get max 40 pts on a skill(20 with Hero Points+20 with affixes).
U can add set affix with Amethyst to all items without eternals&set affix.
Abso check them out:
Also:
@Short
We can evolve your build better if u want to know how we can i gonna say.