So you're telling me that the spell Icy Prison, which encases a target in a solid block of ice, doesn't tell you why the target is helpless?
Yes, because helpless is several things, not all equals, so it is a open ended condition.
Read Dave Justus reply:
"Whether you are frozen solid (which might stop something from moving even if it didn't take cold damage) or locked in an icy stasis or whatever, but it really doesn't matter as far as the rules go. The spell makes you helpless."
That form of helpless block your ability to think or move even if you are incorporeal.
In what you mean as a rhetorical question you say: "encases a target in a solid block of ice". Well, that would not block someone from thinking and taking purely mental actions, nor a incorporeal creature from moving out of the ice if it is thin enough.
Both ckdragons and I think that the row about breaking the ice in the spell description is meant to allow the one inside to burst it. With Dave interpretation it is impossible, with yours it is dubious.
All that because the writer use the word helpless that has no clear in game effect. The target of the spell is unconscious as he is frozen solid? Or it is only his capability to make physical actions that is blocked?
I don't think you can be "immune to being frozen"
So you are saying that this spell should affect a ice elemental?RAW it do, it make it helpless "for reasons". Pretty silly, a creature made of ice, that can move trough ice is defeated by a spell that encase it in ice. But that is exactly what making the target helpless do.