Assuming that the spading on the Third Eye Hunter is correct, he can normally block 12-20 damage with Light of the Eye. Against Prison of Ice, he's blocked 3-9 damage so far.
So that's 9-11 restrain - at least for the form with thawing blade?
You flick droplets of water from your icy blade. Each becomes a shard of ice, raining down on the hunter for 24 damage, but golden light weighs down your attack, preventing all but 15 damage.
You flick droplets of water from your icy blade. Each becomes a shard of ice, raining down on the hunter for 21 damage, but golden light weighs down your attack, preventing all but 12 damage.
You flick droplets of water from your icy blade. Each becomes a shard of ice, raining down on the hunter for 21 damage, but golden light weighs down your attack, preventing all but 18 damage.
(if anyone wants to pvp-test this, I'll do it tomorrow — otherwise probably resetting pretty quickly here so it would have to be another week.)