Let’s talk, a little bit, about the home of the dragons: Dradhakh, Continent of Wyrms. Like all the other continents of the Beyond, Dradakh is isolated by natural and magical barriers. It is biologically discrete, with its own distinct ecology (different from all other continents) and dominant species.
Earth, prior to 65 million years ago and the extinction event, was ruled by dinosaurs. They were the dominant form of life, and most ecological niches, from aquatic life to land animals to flyers, from herbivores to carnivores to carrion-eaters, were filled by dinosaurs. After the event, mammals filled those roles; Earth became the domain of mammals.
Dradhakh is the continent of dragons — they are the dominant form of life, and most ecological niches are filled by draconic strains. Six limbed, usually sharp toothed, usually winged, scaly beasts rule the air, sea, and land. From the tiny hovering drakelets, akin to hummingbirds and no bigger than a man’s thumb, to the gigantic leviathans, sea serpents with vestigial limbs (who plague Atlantic and Pacific shipping), from massive herbivores like giant 6-limbed komodo dragons, to the intelligent draconic centaur-like Khadach, draconics are everywhere.
Greatest of these, of course, are the Great Dragons. Highly intelligent, cunning, driven, the continent is theirs.
The continent is shaped like a long, thin knife, with tall, frigid mountains running along the spine, and torrid swamps and beaches lining the edge. In between is every biome known — deserts, swamps, temperate forests, wide, flat plains. And everywhere, draconics.
In ages past, the Greats would mate and retreat to lay their eggs. They kept them in a vault with their hoard, where they were well guarded. They preferred to find or make long, thin caverns, walled off from aerial attack and with only one ingress to guard. The eggs would be guarded by the entire clutch, and safe in the lair the Greats could form and hatch a new clutch.
Greats would mark off massive swathes of terrain for the hunt — all Greats are meat eaters. This was their land, their domain, and woe to those who trespassed its borders.
(Vegetation grows insanely fast in Dradhakh, and herbivores are plentiful. Else the dragons would go extinct. As Europe discovered, this is not always a good thing.)
The Khadach were a semi-humanoid species, common across much of Dradhakh. Picture a slender, 6-legged komodo dragon, about six feet long, that can rear up on its hind quarters. The front two limbs have hands, which the Khadach could use to make and wield weapons. Khadach are less intelligent than humans, but more intelligent than animals.
The Greats would imprint Khadach tribes, turning them into serfs. The Khadach would serve the Greats, guarding their lairs and their hoard, flushing out game for the hunt, scouting for intruders, and fighting off unimprinted Khadach tribesmen. They would clean their masters’ scales and teeth (removing parasites as well as detritus), gather fresh fronds and grasses for bedding, and hunt down vermin. As serfs, they lived in symbiosis with their masters.
Draconics come through vortexes quite often. The Green Eruption that covered Europe in violent jungle was born of Dradhakh, as were the drakes the Europeans train to burn back the verdant growth. Many of the creatures attacking Utah come from the draconic continent, and the leviathans and sea serpents who make ocean passages a dangerous venture also originated there. Then there is Xiyatu.
Xiyatu is the domain of a clutch of Greats, the center of their territory. The Greats have imprinted on many, who are their serfs. And in the mountains nearby, is dug the clutch’s lair.
The dragons have shaped the city into what it is: a sovereign kingdom ruled by seven nearly-unkillable, genius-level, dinosaur-sized, armored flying death machines.