Eternal Army

Survivors of the Umbral Bomb. A group that is all that remains from over 20,000+ strong force,
Removed by a magical force, 99.999% killed They can’t be killed, but can be injured and have undead like properties - when one is killed the others in the "army" become immune to that method of death and can regenerate from it. Have no nation to speak of, more a council of indiduals, in a unique position of being classified as a greater house but with no lands etc