Eberron

Rumors have this world have recently reached the planes. A few confused adventurers claiming to be from this world have shown up in Sigil. They told wonderous tales of constructs, trains, flying ships that were not Spelljammers, and a unique perspective about whether or not their gods exist. It seems their not sure. I doubt their gods would be pleased if they knew.

The Guide has dispatched staff to determine what recreational pharmaceuticals can be found on this planet, but so far none have returned.