Theocratical's page

I'm trying to build an ice based Eidolon for my summoner. The concept I'm working on is sort of a magical frozen knight. However, while there are two acid spells and three fire spells, there's only one ice spell, one force spell, and one electricity spell in the entire list. Even worse, the ice spell, Ray of Frost, doesn't scale to level at all leaving my Eidolon doing a dinky 1d3 damage.

My GM doesn't want to use third party material so I'm wondering if anyone has any advice? I really like this concept and I've already built my character but I don't want to be useless.

I remember reading in some Campaign Setting book a little snippet about a sort of degenerated dragon type called Humor Dragons that were presumably based off the four humors. For an upcoming dragon heavy campaign my GM wants us all to sort of ally ourselves with a certain dragon and I was thinking of allying myself with humor dragon, but now that I'm looking for it I cant find the book that had the information on them. I'm starting to think that they were something my mind made up at this point.

Does anyone know what I'm thinking of? Any help is appreciated.