Some thoughts:
I feel like 2 holy smites is too much, considering you don't have pyromancer in your deck and 2x whelps already that will help you to interact with voljin.
Having no Cabal in your deck is a weak spot I think.
Some people use one holy nova and 1 Lightbomb. I feel that coul really help against Decks like Handlock.
I personally prefer dark cultist over technician. But doesn't make much of a difference I guess
Does Eydis make sense in your deck? If you play no Velen's Chosen then the effect only triggers from power word shield if I see that correctly.
Velen's is a good overall card because it can make your whelps and agents much stronger but also exposes them to silence.