Hive of Races

In principle, Legolas moved across the snow without skis, so this is a good idea. And where would they get so much wood in the far north anyway? You're right! They'll run across the snow just fine.

After all, they are Rangers, right? So, you could also add a speed bonus to an army that includes Ice Archers when moving across snow, ice, etc.

Regarding EvilPit:
Magic of Fear.
1. Fog. Covers 1/6 of the battlefield. Enemy warriors caught in it move 2 squares slower until they get out; archers also lose the ability to shoot. It does not affect flying units or units capable of magic.
2. Ominous Fog. Similar to regular fog, plus a loss of morale until they get out. Morale is not lost if the enemy is under the influence of the Bloodlust spell or any spell that increases morale.
3. Horrific Vision. An enemy unit freezes in fear for 2 turns.
4. Disorientation. When moving to a specified point, the unit meanders across the battlefield, deviating to the sides by 2-3 squares.