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Arcane Mysteries: The Secrets of the Arcanum

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Do you want to learn some magic?

Arcane Mysteries is the first in the Arcanum D&D series of sourcebooks
for Dungeons & Dragons 5th edition.

An invaluable resource for every Wizard, Warlock, Sorcerer, Bard, Artificer, Eldritch Knight, and Arcane Trickster, this arcane tome contains 90 arcane class archetypes, 196 eldritch invocations, 210 esoteric feats, 5 mysterious backgrounds, 17 obscure creatures and constructs, 88 magical items, and 655 powerful spells.


The secrets of The Arcanum await your discovery within these pages.

Updated to be compatible with the optional material in Tasha’s Cauldron of Everything, plus adding a myriad of new options!

If you already own Arcane Mysteries of Eberron, you can get Arcane Mysteres: The Secrets of the Arcanum at a discount by purchasing it in the Arcanum D&D Arcane Options Bundle.

New Arcane Archetypes include:

Wizard Schools

  • School of Arcane Alchemy

  • School of Arcane Artifice
  • School of Death
  • School of Eldritch Magic
  • School of Energy Arcana
  • School of Lore
  • School of Reanimation
  • School of Spellcraft
  • School of Summoning
  • School of Telekinesis
  • School of the Mind
  • School of the Rune Scribe
  • School of the Shade
  • School of Toxicology
  • School of Transformation
  • School of Transportation
  • School of Martial Magic
  • School of the Arcane Marksman
  • School of the Arcane Way
  • School of Focus Arcanum

Sorcerer Bloodlines

  • Accursed Bloodline

  • Arcane Bloodline
  • Blood Sorcery
  • Deep Magic
  • Demonic Bloodline
  • Elemental Lineage
  • Fey Touched
  • Mindborn
  • Nephlim Bloodline
  • Sea Sorcery
  • Spellfire Adept
  • Sun Sorcery
  • Telekinetic Sorcery
  • Winter Sorcery
Warlock Patrons
  • The Artifact

  • The Beyond
  • The Elder Dragon
  • The Elder Mind
  • The Eldritch Trickster
  • The Enigma
  • The Figment
  • The Genii Locorum
  • The Legendary Hero
  • The Machine
  • The Marked One
  • The Primal Chaos
  • The Primeval Ooze
  • The Source
Bardic Colleges
  • College of Acrobatics

  • College of Dramatic Arts
  • College of Eldritch Lore
  • College of Inspiration
  • College of Mockery
  • College of Pantomime
  • College of the Bladesong
  • College of the Companion
  • College of the Harbinger
  • College of the Magician
  • College of the Soundsmith
  • College of the Spellsong
  • College of the Spirit Dirge
  • College of War
Artificer Specialties
  • Aeronaut
  • Arcane Jeweler
  • Bowyer
  • Clockwork Tinker
  • Eldritch Artificer
  • Engineer
  • Guncrafter
  • Iron Chef
  • Physicker
  • Reanimator
  • Runewright
  • Sigilist
  • Spellweaver
  • Stone Shaper
  • Tattoo Artist
  • Trapsmith
Fighter Eldritch Knight Orders
  • Accursed Blade

  • Order of Aegis
  • Order of the Cloak
  • Order of the Eye
  • Order of the Rod

Rogish Arcane Archetypes

  • Arcane Duelist

  • Etherblade
  • Shadowdancer
  • Spellhunter
  • Scroll Thief
Monk Arcane Monastic Traditions
  • Way of Eldritch Power
  • Way of the Arcane Fist

 Part of the Arcanum D&D series of sourcebooks by Arcanum Press.

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Reviews (1)
Discussions (6)
Customer avatar
Daniel R October 07, 2023 5:53 am UTC
PURCHASER
Under War Mage Adept, a prerequisite is "ability to use a weapon as a spellcasting focus".
It grants the ability to use any weapon you are proficient with as a spellcasting focus."

Seems a little strange there.
Is that prerequisite a mistake?
I can't think of anything off the top of my head other than Improved Pact Weapon that grants that (outside of some options in 3rd party books)
Customer avatar
Daniel V May 23, 2022 9:37 pm UTC
CREATOR
Arcane Mysteries has been updated with more optional rules and features compatible with the material in Tasha’s Cauldron of Everything.
Reply
Customer avatar
Christopher L July 26, 2022 11:45 pm UTC
PURCHASER
Regarding the differences in class features between the Clockwork Tinkerer in this book and Arcane Mysteries of Eberron: which takes precedence in regards to being the most updated?

Love the book, thanks!
Reply
Customer avatar
Daniel V July 27, 2022 4:48 am UTC
CREATOR
This book contains the most current version of all the subclasses and other options.
Reply
Customer avatar
Christopher L July 27, 2022 8:05 pm UTC
PURCHASER
That's great! Thank you so much!
Customer avatar
Bill G January 02, 2021 11:00 pm UTC
PURCHASER
Fantastic addition to the game, this has obviously been fully playtested and time was taken to keep things balanced.
Customer avatar
Daniel C October 02, 2019 9:48 pm UTC
I have a question how do the eldritch Knight and arcane trickster extras work? Are they some sort of SUB SUB class or are they separate fighter and rouge archetypes that are just similar 1/3 casters?
Reply
Customer avatar
Daniel V October 02, 2019 10:01 pm UTC
CREATOR
The Eldritch Knight and Arcane Trickster variants are separate fighter and rogue archetypes that are 1/3 casters. They each have different class features, but the spellcasting feature is largely the same except for the schools of magic that they have access to for their spells of 1st level or higher.
For the variant Eldritch Knights:
Order of Aegis: Abjuration & Transmutation
Order of the Cloak: Necromancy & Enchantment
Order of the Eye: Divination & Illusion
Order of the Rod: Conjuration & Evocation
For the Arcane Trickster Variants:
Etherblade: Divination & Illusion
Shadowdancer: Necromancy & Illusion
Spellhunter: Abjuration & Illusion
Reply
Customer avatar
Daniel C October 05, 2019 5:00 am UTC
okay cool! thanks for responding!
Customer avatar
Daniel V September 27, 2019 6:44 pm UTC
CREATOR
Arcane Mysteries is soon to get a major update with new formatting, art, corrections, clarifications, and a bit of additional material. As always: let me know if you have any comments, suggestions, or questions.
Reply
Customer avatar
Daniel V November 05, 2019 6:14 pm UTC
CREATOR
The new and improved version 1.10 of Arcane Mysteries is now live.
Customer avatar
Daniel V August 08, 2019 5:38 pm UTC
CREATOR
Updated Arcane Mysteries to Version 1.04 fixing some typos and adding some material omitted from the original release. As always: let me know if you have any comments, suggestions, or questions.

Daniel
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316
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File Last Updated:
May 23, 2022
This title was added to our catalog on July 30, 2019.