Fuck you, and fuck your armies! (I may have overdid it with the buildcraft)

To explain how I managed to pull this off, this wasn't particularly spellcasting-heavy. To break it down...

1. Eminere here is a nature dragon. This was to get access to Nature Aura, which gives a new stack of regeneration at the end of your turn, which means you can crank your HP by 30 every turn once it has time to build up. Eminere took many times her health pool during the course of this fight.
2. The Materium Aspect at level 4 giving you defense, and critical chance for offense is a godsend for actually doling out damage with this. You're gonna need it to stay ahead of the incoming hits.
3. The Astral Transformation makes you immune to the vast majority of everything, otherwise I probably would have died to status effect damage. The stun on breath weapon helped a lot, especially since the upgraded comet can hit so many enemies at once.
4. Grinding for levels helps a lot if you start early. Dragons can mulch earlygame stacks near solo, so they can level up far and away faster than the vast majority of hero options. In another game, I was level 8 by turn 4, which is absolutely absurd.
5. The Industrious Culture lets you pick up Bolster on your dragon lord, which stacks all to high heaven when you're being attacked constantly. Such as, say, when there's no other targets for the enemy to go after.

Note, however, that this setup isn't a cure-all for everything. Dragons still have morale, and can still be forced to flee if they get bogged down by, for example, terror knights and joy siphoners. Things that strip buffs can also be a right terror to this setup, since you depend on regen and bolster to survive. But it's absurdly, stupidly fun to go full kaiju mode on an army or three.

Except that's how a dragon should be...

I just wish we could recruit other dragon heros easily.

Like, I don't want armies of dragon fodder, I want a 6 squad of hero dragons! all customized with different forms!