The only thing that I noticed in my new Niefelheim game is that the Son of Niefel pretender is a fair amount more powerful, at least against independents, because of the improvement in the Winter Wolf, which he gets one per turn in cold dominion.
(511) Winter Wolf +7 HP, +10 Prot, +2 Str, +Stealth
The extra protection and hit points make them pretty powerful while remaining ethereal. I am not saying they should be adjusted, but just wanted to mention that it was a result of improving the winter wolf. In games past I tended to lose my Winter Wolves in battles and never really did get them in big numbers. In my recent game, I have yet to lose one and have a group of 15 of them now on turn 19
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