Long ago, the world was twinned to save it from a final conflict between gods and primordials. The gods took one sibling (Toril), and the primordials claimed the other (Abeir).
Ages later, the Spellplague (which Abeirans call the Blue Breath of Change) caused the two separate worlds to collide and overlap. Portions of each world shifted into the other. Then the worlds separated again, contact severed, but each having contributed to the other. Perhaps as much as one-quarter of Toril now hosts lands native to Abeir.
The two most significant transplanted lands on the continent of Faerûn are Akanûl and Tymanther. However, the largest new landmass by far is an entire continent that Faerûnians call Returned Abeir, which lies west of the Trackless Sea.
In Returned Abeir, dragons rule vast realms of slaves. The dragonborn are the most numerous, but they are given to rebellion. Dwarves and humans are plentiful. Genasi were also numerous, but mostly on the eastern continent of Shyr (a continent that was not transported to Toril by the Blue Breath of Change). Other races are less numerous, and fey such as elves and eladrin are rare curiosities introduced only in the last century. Organized religion in Returned Abeir (faiths, simple shrines, and traveling clergy) is something new; even the concept of gods who answer prayers is still alien to many, though some deities of Toril have set their sights on the returned lands.
The true history of the long unfolding of events in Abeir is hidden from most mortals alive today, though they hold many conflicting beliefs about the past. Among humans, only a handful of priests and sages know anything more than what follows (which is considered true by most Abeirans).
Of old, the Dawn Titans (the primordials) fought the Estelar (gods) and were humbled. Great was the slaughter among the Dawn Titans, but they retained Abeir for their own. Seared and ravaged by the divine fires of their foes, the few who survived were tired from strife. Sensing this, their steeds the dragons turned on and rose against the Dawn Titans, slaying more, until nearly all who yet endured retreated into the very stones of the mountains and fell silent.
The triumphant dragons then made war on each other and on dragons who remained loyal to the Dawn Titans. This event was called the War of Fang and Talon, in which dragons recklessly unleashed the abandoned magic of the primordials. Much of Abeir was laid to waste, and the dragons were in turn left scarred, few in number, and at long last weary of war.
Then the legendary Gorloun, a dragon of immense size, might, and age, founded the first dragon empire. Rival draconic realms sprang up thereafter, and the long Rule of Dragons began.
Dragons quarreled, empires rose, expanded, and decayed, or were wrested from the talons of their dying emperors, but draconic rule survived nearly unchallenged until the Blue Breath of Change unearthed small quantities of dragonbane amber, enough to shatter the Rule of Dragons. Now, whole lands of Returned Abeir govern themselves, free of draconic rule at least for the moment.
Shape of the Land
Returned Abeir is dominated by mighty mountain ranges on three sides, arcing around a great central bay, the Dragon Sea.
Returned Abeir’s north coast is made up of bleak, uninhabited sheer cliffs falling into the waves from the cold, jagged heights of the mountains where Dawn Titans sleep in icy Fimbrul. South is the mountain land of Relmaur, home to warring dragonborn and orcs, and forming a natural barrier between the last two surviving dragon realms: the jungle of Melabrauth to the west, and the vast grasslands of Skelkor to the east. A mountain range separates Skelkor from human-held Eskorn and the Sword Lands. The western land of Gontal hunkers behind its mountainous border and reveals little of itself to outsiders. A land of mystery to many Abeirans, Gontal’s citizens know it as a place of raging intrigues.