Fear and Loathing in Athas
In the splintering of the world, the Elves split into two distinct races. While one race became desert-dwelling bandits, the other took to the sea. The seas dried up, and these elves, having passed beyond the horizon, with nowhere else to go, went underground. When they emerged, the world was changed. Friend was foe, and foes were even worse.
These elves found themselves changed. Their skin had darkened, and their sensibilities were altered. Gone were the expanses of wilderness that they once called home. Now, there was a great Sea of Silt that captured their sense of adventure. These newly named Drow found themselves adrift on this Silt Sea, where, like their Elven brethren of the surface, the passerby held more riches than they could get on their own. Pirates they became, and while pirates are not uncommon on the Sea of Silt, an encounter with Drow Silt Pirates is not soon forgotten.