Mordenkainen's Fiendish Folio

Mordenkainen's Fiendish Folio is a quasi-official PDF-only splatbook for Dungeons & Dragons 5th Edition, released on the Dungeon Master's Guild. It is one of several such booklets produced by Wizards of the Coast to raise money for the charity "Extra Life". Currently, there is only one Fiendish Folio, but its titling scheme suggests a plane to release spin-offs, turning it into a series. As its name suggests, this is an update of assorted monsters from the original Fiend Folio, giving them new stats and lore.

Volume 1: Monsters Benevolent and Benign

The title is a total lie, as almost none of the monsters in this volume are either of those things.

This volume contains the following monsters:

• Assassin Bug
• Blindheim
• Crab Folk (originally Crabmen)
• Dire Corby
• Eye of Fear and Flame
• Forlarren
• Fog Giant
• Jermlaine
• Khagra
• Killmoulis
• Mite
• Needlefolk (originally Needlemen)
• Norker
• Screaming Devilkin
• Ygorl (Slaad lord)
• Xill