Newbie Qs (I read the guides)

[Tough Guy]

I have read the guides and would like a few Qs answered please. I have barely begun to play and am totally obsessed with the game.

1) There are bonuses for casting a spell and being at least 2 levels higher than the spell level. Does this refer to level of fire/water/astral/etc or to evocation/alteration/etc???

2)I am confused about the heat/cold scale. If I make a Jotunheim pretender is he +3 cold? I thought I read that somewhere? Or is that for his unit only?


Thanks!