I have always wanted to do a crossover of my two favourite D&D settings, Birthright and Dark Sun. How would it look like?
In Birthright the PCs have the option of being the rulers of the kingdoms. There are four kinds of holdings. Law (usually held by warriors), Temples (clerics), Guild (rogues) and Sources (wizards).
The City States would be theocracies: The Law and Temple holdings would be in the nominal control of the King/Queen but the templars would be in charge of day to day operations. I would make some arrangements for Tyr and I would give Urik a more military flavour, but that would be it.
However, the guild (commerce) and source (magic) holdings give us more possibilities. The stablishment and maintenance of trade routes between the city-states would make for a campign by itself.
Sources (magical power) are related to the natural state of the land. For example, an ancient forest would offer a source of 9, whereas cultivated land would give a source of 2. The idea could be used in a Dark Sun setting, as magic comes from plant life. I would use “elemental sources” for druids and elemental priests too. For example, a lava field would be a source 0 for a defiler but a source 9 for a fire cleric.
In Birthright you can move powerful magic from a place to another through ley lines. If a defiler wants to cast a a high spell in a sand waste they can do so if they control a good source somewhere else and establish a ley line to the sand waste. I don’t know if it would be a good idea to implement ley lines in Dark Sun.
Another thing we’ll have to think about is how psionics find their place in the picture.
Well, tell me what do you think about this. This would probably make for a good play-by-post game.