priests spells?

>My point is that the situation where the caelian weapons is an advantage
>is less common than it was in dom 1.

I'm sorry for this naive question but could this effect be linked to the temperature too, like ice armors ? Exemple : if your caelians fight in a +2 or +3 cold province, they get "magical" sharpened weapons. But if they fight in a warmer climate (say, cold +1 or warmer) their lances do ordinary damage only. Just a suggestion (it could be like that already, I dunno).