Original Post — Direct link
It clearly seems that the bonus (+50% damage per target hit) is not applied on the dark convergence set.
I didn't test it in PvP but in PvE (Skyreach), on 1 to 50+ target, it always do the same damage.
about 2 years ago - ZOS_Kevin - Direct link
Thanks for tagging, @Pymad.

I checked in with the Dev team and this has ben identified and fixed. The fix will appear in U33. After U33 launch, please tag again to confirm all is right on your side. Happy to pass feedback to our internal teams. Thanks.