see title; hiemal shield is a sustain, and is not temporarily until after you de-sustain it, and so, shattering blow shouldn't pop it
however, I managed to pop it vs. 2 necromancers, so this presumably isn't working as intended
[1.7.2] Shattering Blow can de-activate Hiemal Shield
Moderator: Moderator
Re: [1.7.2] Shattering Blow can de-activate Hiemal Shield
This makes me wonder if it can remove Disruption Shield as well. I haven't tested it, but it's another sustain that gives a shield.