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500+ Combat and Social Weaknesses. This book provides combat weaknesses for every monster in the Monster Manual and social weaknesses for every monster that speaks a language available to player characters. The inspiration for these weaknesses comes from a creature’s anatomy, description in the Monster Manual, or well-known legends. Each weakness presented in this book is meant to be a trait that can be appended to a creature’s stat block.

14 Custom Illustrated Experts. This book contains characters knowledgeable in each of the different monster types to walk you through these monster weaknesses. These characters can be used in a campaign as NPCs or potentially be the authors of tomes or notes found in a library. 

Advice and Mechanics. This book contains advice and mechanics for discovering monster weaknesses as well as designing your own!


1Adam Hancock, co-author of best-selling An Elf and an Orc Had a Little Baby. “Do you want your players to feel like expert tacticians looking forward to their next battle? Monster Weaknesses introduces a weakness or two for every creature in the Monster Manual! Add a new fun dimension to combat. I might let a knowledgable NPC let slip the vampire weakness to give them a fighting chance in my own campaign.”

1Christian Zeuch (CZRPG), prolific writer of the Encounters series, including Encounters in Barovia and Encounters with the Dark Powers. “Monster Weaknesses is a supplement every DM needs as it brings additional and interesting ways to use monsters. Some of the entries, like the Blue Dragon and Green Dragon reminded me of epic scenes you see in movies. I'm hoping to see more of these for the other creature books too! As a plus: the book is very well presented. Beautiful artwork and layout!”

1Dragonix, author of Adamantine-best-seller Monster Manual Expanded. “If you found DM Options: Monster Talents very useful, you’ll find Monster Weaknesses equally invaluable. It makes the perfect foil for Monster Talents, allowing you to offset the extra features and perks you give a creature with an Achilles heel. Monster Weaknesses opens a lot of possibilities for your encounters, giving your players who are fighting a challenging foe a chance to turn the tide of battle by exploiting the enemy’s flaw, thus giving the combat experience more depth and excitement! Highly recommended!”




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Reviews (5)
Discussions (6)
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Brandon P December 23, 2022 7:26 pm UTC
This is an amazing product. Out of all the storytelling training in my material, this publication seems to be the most important to add. The trinity of opposition means your adventure party faces many challenges from three primary villains. Weaknesses are the missing thing in most monster guides. I highly recommend this specific product over 1000s of other wonderful publications on the guild.
Customer avatar
Kevin R December 09, 2022 7:53 pm UTC
I've been using this in my games since I bought it, it's been a ton of fun and adds some really neat depth to 5e encounters I wouldn't even have thought to homebrew.
Customer avatar
Shaan G May 05, 2022 12:55 pm UTC
Just bought this, and it looks really useful. I know it's early days, but do you have plans to make a version for other 5e monsters?
Customer avatar
Daniel K May 05, 2022 12:57 pm UTC
Hey Shaan! Yes! The current plan is to release at least one more Monster Weaknesses title for one or more additional monster books.
Customer avatar
Wout T May 04, 2022 12:45 pm UTC
Great that you did this! Official 5e monsters have far too few weaknesses (often even logical ones which used to be in older editions) and to take a creative approach to this is a perfect way to make encounters more varied and monsters more interesting and varied!
Customer avatar
Daniel K May 04, 2022 1:25 pm UTC
Thanks Wout! Really glad you like it. After 24 hours of your purchase, please consider leaving us a rating :-)
Customer avatar
Kevin R May 03, 2022 11:08 pm UTC
Commoner weakness OP, plz nerf. I'm already working on implementing these into my game, and I'll be giving a formal review as soon as the timer lets me. All the weaknesses I've looked at so far have been thematically consistent with the monster, and far more interesting that just "vulnerable to X." These are really cool, and I look forward to my players learning what monsters weaknesses are over time.
Edit: Cleric Corner sent me. Actually he didn't, but I saw his video and came to buy immediately.
Customer avatar
Daniel K May 03, 2022 11:42 pm UTC
Kevin, I can assure you that Commoners underwent rigorous playtesting. :-)
Cleric Corner is awesome!
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File Last Updated:
June 06, 2022
This title was added to our catalog on May 03, 2022.