(Scars do not appear to be cause of death –shock ... - Bad Request

She shook her head. "No, my Love. There is something about this Fortress -
the shell that surrounds it cuts it off from the rest of the Planes. It is that
shell that acts as a barrier to your immortality."
"How could this shell act as an obstacle? That makes no sense."
"As I have maintained my vigil here in this place, I have come to learn the
nature of your immortality, my Love. It is a thing which hungers for the lives
of others. At the moment of your death, it claims another living thing in your
place, allowing you to live. The soul that dies in your place is brought here,
to the Fortress, as a shadow. I believe this shell prevents your immortality
from finding another victim."
I swallowed the lump in my throat, "So... when I die, another dies in my
place. And if it can't find another living thing to die for me..."
"Then if you die in this place, it is the end, for there is nothing that lives here
- so you must be careful. Return back to Sigil and leave this cursed place!"
"But - my allies are here: and that means they are inside this shell. What
happens to them if I die?"
"My Love, if you have brought anything that lives with you to this place,
then it is in terrible danger - both from the shadows and from you. Should
you die here, your immortality will hunt for the closest living thing in the
Fortress, and that is the one that shall die in your place. You must leave
here, now!"
"I can't go back. So can you tell me anything else that might be helpful?
What waits inside the Fortress?"
"There is no natural darkness within the Fortress, my Love, only the shades
of those who have died in your place. The energies of this Plane feed them,
and their hatred for you is beyond all reason. They will not permit you to
leave." She threw a glance at the walls of the Fortress. "Do not enter, I beg
you!"
"But - my allies are in there. I cannot leave them. Do you have any idea
where they might be?"
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