Forgotten Realms Wiki
Forgotten Realms Wiki

A tome of clear thought was a magical book that contained exercises to supernaturally increase its reader's intelligence.[1]


Tomes of clear thought were heavy books that contained exercises designed to improve the reader's memory and logical thinking.[1][4]


Charged within the book's words was a powerful magical enchantment. If the reader completed the book within a period of 6 days, an activity that required a total of 48 hours of reading, the reader was endowed with a substantial improvement to mental capacities, including the ability to further extend them beyond natural capabilities.[1][4]

Once the book was fully read, it spent its magical power and became an ordinary book.[4] However, the book recharged its power after one century.[1]

Notable Owners[]



  1. Canon material does not provide a year for the events described in Waterdeep: Dragon Heist, but Christopher Perkins answered a question via Twitter and stated the year was 1492 DR. Corroborating this, Dragon Heist page 20 refers to events of Death Masks (set in 1491 DR) as being "last year". Unless a canon source contradicts this assertion, this wiki will use 1492 DR for events related to this sourcebook and Waterdeep: Dungeon of the Mad Mage (which is referenced on pages 5 and 98 of Dragon Heist).


Desert of DesolationWaterdeep: Dungeon of the Mad Mage
Video Games
Dungeon HackBaldur's Gate
Card Games
AD&D Trading Cards

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