I'm planning a Planescape Campaign (1st time DMing) and I wanted to start the players out in the Forgotten Realms setting (none of us have ever played Planescape before - I'm the only one Knowledgable about it)
The party would start out on FR, and spend some time adventuring in the FR setting. After sometime the transition to PS would occur (a powerful mage traps the party and sends them thru an enigmatic portal he's discovered to see where it leads to) It would open up onto the Outlands.
I'm trying to concieve of a possible link between Toril (FR's Prime) and the Great Wheel Cosmology. I didn't want to make the link between the Great Wheel and Toril evident (by evident I mean well known within the setting) since I wanted to keep the two setting apart (PS being a whole new 'world' so to speak - A whole new dimension of planes). I'm trying to achieve the kinda thing where the party end up in a place which they never even heard of and nobody - except possibly a few legendary planewalkers- even heard of their home prime either. The impetus for travelling the planes would be compelling - finding a way to get back home.
I'd appreciate any help Even ideas are welcome.
I seem to have gone about this the wrong way.
Having searched and read all the previous posts and threads regarding this subejct (FR and the PS cosmology) I can now better rephrase what I have in mind. Altho I do agree with everyone that the new FR cosmology isn't worth a shaved copper (the WOTC syndrome of 'hey lets redesign everything ! Why? Why not!) - did anyone see the Favored Soul class in Complete Arcane? Simply a Cleric/Sorceror hybrid (nearly cried when i saw it)
What I want to attempt is to stay away from the FR cosmology entirely and ignore it totally. This is to be able to present the PS setting to players who have never played it before. I want to present it as something completely new (and watch the characters experience and learn the planes - complete clueless)
Replacing the FR cosmology with the PS setting would mean that the players would have heard of the cosmology since it would be tied directly to thier prime - and that would somewhat tarnish the novelty - since planewalkers would have been there and back to tell the tale and spread the legends - or thats the impression I have at any rate.
(as a side note - I quite imagined Eberron's Warforged as some sort of experimental Modron soldier which, having developed invidiuality, was 'disposed of' as a failed attempt and left to run about the planes)