Avatar - The Council of Nine
The Council of Nine at first glance seems to be nine distinct entities. They take the form of assorted men and women, with a variety of appearances and personalities. This is something of an illusion - the Nine are in fact one entity splitting it's being; they must remain relatively near each other, but otherwise can act somewhat independently. The Nine's true form is a nine-headed draconic being, which the individual beings can merge into as needed.
Geomantic Adept
Running off one's personal magic is, for most people, grossly inefficient. It can be trained, it can be improved, but to do so relies on trying to increase the size of a container that begins as effectively a small cup for the vast majority of initiates. It also leaves an avenue of fueling those spells untapped - a ready to access reservoir of magical energy, the land itself.
The god of the Auran Empire deigned to teach it's people the secrets of geomancy, the performance of ritual-spells using complex arcane symbols and reagents; the adept draws the appropriate magical signs, usually either carved in the dirt with a staff or on hardier ground built with stones. Once established, this allows the user to tap into local leylines and mana in order to fuel their spells, contributing only a sliver of their own reserve in comparison.
Geomantic magic has an advantage critical to military use - it is efficient. It allows someone with comparatively little mana to cast more spells before they're exhausted, or cast larger spells than they would otherwise be able to. They take some time to set up but once established can just keep going and going, either casting a similar number of higher power spells or a larger number of normal-powered spells. Geomantic Adepts are those trained in the creation of the proper magical circles and ritual ingredients (along with the small entourage of initiates assisting their master in the setup).
((TLDR: Magic users, but trading a setup time and reduced adaptability with being able to pump more power into spells or cast more spells with the same power. Meant to be a setup to more magic down the road, since that's been kinda underutilized in Chiaruscuro))