mellored
Legend
Hex is a level 1 spell. Spirit Shroud is level 3.When Spirit Shroud does more than 2.5 times as much damage as Hex when both are upcast to the same level either it's way overtuned or Hex is seriously undertuned. When one of them does 10 DPR more than the other this has a serious impact on your DPR calculations.
Your comparing up cast burning hands to fireball.
Also, hex last 24 hours at this level. So you could use the other slots to smite on non-crits.
Assuming the 6 encounters * 3 rounds each = 18 rounds. Then you could hex + smite every other round. Averaging to an unmissable 1d6 per attack.
3d6 Hex * 3 attacks * .6 = 6.3
Hex crit = 0.525
+6d6 * evey other round = 10.5
Smite crit = .525
= 17.85 > 17.55 spirit shroud
So no, spirit should is the problem.
3 attacks with +1d6 on someone with multiple 5th level slots is over tuned.
And let's not forget. You still have a circle of death, force cage, and whatever your subclass gives.
Though on the other side, you have d8 hit dice. So you're a bit squishy.