From the Very Beginning - I

Nostrom, an armed alchemical fortress forged by Flamelle, was not born from a desire to unleash violence. 

Flamelle, who was devoted to creation, did not revel in aggression. The existence of Nostrom served merely as a deterrent to the Empress, the Flamefeast, a symbol that rendered him, a man "averse to combat", exceedingly dangerous.

It was an ultimate weapon that, under his control, could potentially annihilate even deities. 

Should the main cannon of Nostrom, at full power, fire in an arc that perfectly hugs the continent's surface, it could, from east to west, cleave through the entire landmass in a single strike. 

Not merely the empire, but the entire continent.