[atul]

I'd like to see paths keep true to their spirit. You bring Fire as an example, but why wouldn't some Evocation / Alteration bring smackdown even on Tartarians? Say a spell in theme of "brightest flames burn fastest" that targets one unit with highest Attack in province for some 999 points of damage? Or a Water spell that stops largest unit from moving, and if you attack the province on same turn it starts the combat under Encase in Ice effect? Air spell that instead of sending one Seeking Arrows at one commander's heart sends one hundred of them (think of Hero's ending)?

Naturally nothing actually moddable, but with some creativity (read: large enough boom) ideas can emerge for other things than summons.