In a time when the North was always warm and the seas of the world were deeper, empires of inhuman people dominated the lands of Toril. In the ilven tradition, these were the days when the Iquar'TelQuessir, or creator races, tamed the wilds, built towering cities of stone and glass on the shores of the warm seas, spanned the wilderness with winding roads, and fought wars of extermination - such was their hatred towards each other. These were the Days of Thunder.
First of these ancient creators with a saurian race that build an extensive if short-lived civilization. Its survivors eventually became the naga, lizardfolk, troglodytes, and similar creatures.
Supreme among the creator races were the dragons, powerful enough to raid large cities of the other creator races with impunity. Dragons dominated the surface world, claiming cast areas of territory and battling each other for land, mates and status. The great drakes only suffered setbacks when lesser races mastered magic, and they remain influential today despite the advances of such rabble.
Developing in the later states of the civilization of the saurians was a race of amphibious shapechangers that crept onto the land to build their proud cities. These creatures contributed to the downfall of the saurians, but they themselves eventually fell into barbarism under pressure from sahuagin, merfolk and tritons. The survivors of this race are the locathah and tako in the sea, and doppelgangers on the land.
Least known of the creator races are the sylvan people that populated the forests and other wooded area, living in harmony with nature and leaving few traces. It is believed that their civilization fragmented after a great plague created by a draconic or demonic power. Their descendants are the sprites, korred, and other small woodfolk that populate secret parts of the Forgotten Realms today.
The last of the creator races, and the one that spend the longest time in a primitive state, are the humans. Always adaptable and ingenious, when circumstances allowed for their rise to prominence, humans make advances with incredible speed and efficiency. of the five creator races, only they truly have a civilization today. The dragons war with each other as individuals, and the other kinds have vanished from the world.