"It's best described as an infection, one that attacks all manner of organic material. There's no real way to cure it, only to purge it. Infection corrupts its victim, and they become subject to some ravenous, collective will to further destroy and spread the infection."

It was exactly as horrid as it had sounded, given what she had witnessed first hand.

"There are those called Wilders who deliberately go out to push back and research the Cwyld, and it has been known to appear in the parts of the city beyond the Bright Wall, but just like us Mirrorbound, much of our understanding of the Cwyld is limited, at best."