Not sure about frozen as described - it seems more like chilled to me.
It should be more like petrified I think - i.e. slow/stop you moving but increase physical armour as ice is harder than flesh. Ice might even be harder than rock (I've not checked).
Well it's like an uber-chilled. Maybe it could remove movement entirely. The fantasy logic is that frozen armor would become brittle. Also mechanically I want a magic armor based cc synergize with physical damage. The reality is probably that being frozen would make you harder to damage with conventional weapons. But the reality is also that being frozen would kill you, so it's sort of moot. Fantasy logic is that ice makes things shatter.
