With Bysmiel Medal half of Vitality is converted to Elemental.
Also Arcane Bomb has both Lightning and Aether RR.
And both Bysmiel’s and Diviner’s can solo Carry a build just fine.
I don’t see how Diviner’s is weak when it can even work on a single mastery build tbh: The Spoopy - Pet Necromancer
(That was before the buffs btw, it only got stronger now)