Nysne is a low-fantasy mod for Warband. It takes place in Calradia, a generation or two after the Native game. Though much is the same in Calradia, things are beginning to change - drastically. It is a pivotal time in the land's history that could easily be shaped by a single leader...

A full description is available on the taleworlds forum. Questions and comments are more likely to be answered quickly there.
https://forums.taleworlds.com/index.php?topic=351362.msg8431660