Hmm some nice thoughts about the tier 1 talent. I have always played with Holy Shield, as an attempt to boost defence and especially magic defence for my whole team. However that black chance feels spiky, and may not always be as helpful at a steady heal that one always can rely on.
So if the survival aspects is not a great loss, the increased damage and AoE is very welcome.

With this and my previously missed talent Blinding Light, I have some new things to try for handling large packs of enemies in a more effective manner.
I will come back with results of how these 2 talents work out for my team.