The cloud doesnt have much of a smell. It looks like fog until it’s on you and then it’s two late. A couple of sucking breaths and your chest is one fire and your eyes are bleeding. Terrible stuff, but if you think it is tough on the living, you should see what it does to the dead

PVT Thomas Quinn.

A crossbow bolt crafted from the deepest shadows, which infects those struck with a terrible spiritual corruption.