Well MortonStromgal already posted the wiki to the Scarred Lands, but I can expound a little bit.
The Scarred Lands is a world of 5 continents, only 2 of which are intimately written about. Ghelspad and Termana.
Basically if you understand Greek mythology, and the war between Gods and Titans. Titans are primal forces of nature and the world, and their progeny the Gods are (now) planar entities with that divine connection to their followers.
War was inevitable since the storm or the plague has no feelings one way or the other about the people in the world, but the gods did. So the Divine War, or the Titanswar ensued, shattering the world of Scarn, and turning it into the Scarred Lands.
Eventually all the titans were sundered, banished, and/or killed. And the gods now rule the Scarred Lands, and have set about to rebuilt the shattered world they inherited. Countless lives, magic items, and divine beings were killed during the war. Other races, titanspawn, now actively work to return their fallen masters under the belief that the cycle of life, death, birth, rebirth, etc... has now grown stagnant with but one treacherous titan, the earthmother Denev to have taken it briefly at the end of the war, and then abdicated her role.
Countless other intrigues and plots await those willing and brave enough to journey the face of Scarn!
Ok, so melodramatic maybe, but I really like the setting. If anyone has any questions or wants to know more, I'd be happy to share, just message me. =P
Yours in Magic,