Extended discussion on Niefelheim:
http://www.shrapnelcommunity.com/thr...fpart=all&vc=1
Wiki on Niefelheim:
http://strategywiki.org/wiki/Dominio...ons/Niefelheim
Short Answer:
Get Nature 9 or 10, and possibly another bless such as W9 or E9. Take Order 3, Cold 3, and the rest is really up to you. Skinshifters are somewhat eclipsed by the Niefel Giants in the early era because they are just so powerful.