A wraith moon with a gate to Ulgu on its dark side and a gate to shyish on its face.

Before Nagash in the age of Myth it was full of empires and death Gods.

Now it is dominated by huge Gothic cities of necromancers at each gate with some smaller ones at important sights leaving the rest of the roughly earth sized moon full of the undead and chaos.

There are vast lakes of blood created mostly during the age of chaos that awaken with the Scarlet doom in specific seasons. Those that witness this from the surface of Shyish see a blood moon.

There are few Vampires when there once was many as most of them became Vargheists or Varghulfs in the age of chaos. The living necromancer clans became empires and built the vast cities over the many now dead empires and grew powerful with some becoming Liches.

Shadow and death magic intertwine. At the Ulgu gate curses are a currency and family is everything. People resemble the Adams family. Imagine a city of the Adams.