Book of Fiends, Volume One: Legions of Hell is a 2001 supplement for d20 System role-playing games published by Green Ronin Publishing.

Contents Book of Fiends, Volume One: Legions of Hell is a supplement in which devils are detailed.

Publication history Shannon Appelcline noted that "In 2001 Green Ronin expanded beyond their early Freeport adventures and went into the business that the more successful d20 publishers were already in: publishing sourcebooks and other gaming material. This began with the well-received monster manual, Legions of Hell: Book of Fiends, Volume One (2001)."

Reviews Pyramid Backstab Asgard #1 (July, 2001) Realms of Fantasyhttps://archive.org/details/realms-of-fantasy-v-08-n-02-2001-12/page/96/mode/2up

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