The way it (should) work is that whenever a Frozen city is founded, the Temple of the Hand is built and the effect triggered when it is built is triggered. This turns everything in a 2-plot radius around the city (which is, correct, 5x5) into snow.
Originally, I had it that the Temple of the Hand was not a starting building. But then people suggested that I give it to them as a starting building, and did. This is exactly the same as what happens when you build the Temple of the Hand as the Illians. If you think it needs toning down, then what will happen is you will not get the Temple as a starting building. I'm not messing with the effect.
Ice Golems are, IIRC, 6/8+2 Cold, but Liberation comes BEFORE Infernal Pact does, meaning that the Frozen already have a leg up on the Infernals in terms of starting strength and spawn speed. I'd personally like to see the spawned civs have a scaling power depending on some factor, whether its the highest tech known to the world or by the techs known to the summoner. Since that isnt possible, there needs to be some limitation on these guys. Combined with the economy ruining effect of the Insta-Temple, Anyone these guys land near will be utterly screwed, and unlike with Hell Terrain there's no way to stop it save terraforming, which requires two different Mana Types (Sun and Water) as opposed to one for Hell Terrain (Life). Toning down the number of units might be applicable, but it would require more play testing.And, their starting units are exactly the same as the Infernal starting units, except that Ice Golems are better then regular Longbowmen. I can change that too, of course, if you feel it's too powerful.
I could weaken Ice Golems... I could reduce number of starting units... or I could push Liberation to a farther-back tech in the tech tree. Which is best?
Also, I can make it so that the Frozen's version of the Temple (the two use different functions, so I can change one and not the other), only fills a one-plot radius area at first, and then when the city's culture expands, the ice expands to a two-plot radius (or, just the BFC, and not the whole two-plot radius).
Making a gameoption we can use to restrict summoning the Frozen separately from the Mercs/Infernals. Any idea on what the name should be? For now all I'm using is 'Blocked Liberation"