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Wormblood is the 5th layer of the Abyss.

Visitors to the fifth layer become afflicted by a form of mummy rot, a deadly magical wasting disease which gradually destroys body with within. This illness killed an entire band of the the Company of the Gyrfalcon within a year of their return from the plane, and no cure could be found.[1]

The plane was officially recorded by the Fraternity of Order in the seventh year of the reign of Factol Jarkopple the Inflexible. The order subsequently barred members of the guild from visiting the plane due to its high danger, setting a precedent which would later forbid travel to other highly dangerous layers.[1]

Rulership of Wormblood is contested. No one demon lord has exclusive reign over this layer of the Abyss.[2]


  1. 1.0 1.1 Planes of Chaos, An Abridged Lexicon of the Abyss (1994).
  2. Fiendish Codex I: Hordes of the Abyss (2006), p.155-157.