It does two things:
1) make any ruler of a single suchy realm insist on being the only duke
2) ensure that the ruler will make a second duchy
This isn't going to happen.
Fair enough.
![](https://forum.battlemaster.org/Themes/Chocolate_Curvaceous_201/images/ip.gif)
Logged
“it was never wise for a ruler to eschew the trappings of power, for power itself flows in no small measure from such trappings.”
- George R.R. Martin ; Melisandre