Unx is one of the many necropolises on Grixis. It was once a grand stadium, but its floor has become a huge sinkhole that leads down to the magma below. Blackened, skeletal creatures skitter around the stone stands as though waiting for something to arise from the chasm.

The necropolis at Unx was once a living city, its streets untrodden by death. (Archdemon of Unx)