This seems like a major "Realms shattering event" for the Kara-Tur area. Does anyone have any idea how this plot might be played out in a Kara-Tur campaign?1361 DR Year of Maidens: The Grand History of the Realms wrote:Tan Chin and his undead armies push eastward into Shou Lung. Weakened by the Horde invasion two years prior, the Shou make feeble stands at Shih Tuh and Yenching but are easily overun. Turning his army northwest, Lo Tu is next to fall, followed by the realm of Khazari by years's end.
I went looking for events leading up to this (and following this). I did find something in 1363 DR Year of the Helm that said that Tan Chin was killed by adventurers in the catacombs beneath Skarou, but that is not too much to go on.
Is there a sourcebook that gives any information about Tan Chin and/or his undead armies? I know that D&D has Eastern Vampires, but are there any other D&D undead that would fit in well with a Kara-Tur campaign based on fighting off an invasion?
Does anyone know about the sort of military forces that would be up against Tan Chin's armies (and how many undead might be needed to overwhelm them)?
Does anyone know if there are any sort of arrangements in Kara-Tur society (or the individual nations) for raising militias? I'm wondering if the PCs could lead a bunch of villagers in a defensive action similar to the plot of The Seven Samurai. Mind you, an entire army of undead, might mean that you can only delay an invasion, while the rest of the people flee.
How about the politics of the individual nations? Is there any chance that some countries would form an alliance against Tan Chin?