[Juzza]

Well, just saying that there is Abisya that has everything to do with fire, then you have Ermor which in the early age has an aspect of fire, also theres mictlan whch also has a fire aspect, though mostly blood and agathara which also has a small fire aspect, adding another nation in the early age with a fire aspect, a large fire aspect to it, may be kinda hard.

Late age would be the best if it wasn't already cluttered with mods, cause thats only got, like 1 or 2 with fire I think, rather than 4.