Large aberration, neutral evil

Armor Class 18 (natural armor)
Hit Points 168 (16d10 + 80)
Speed 40 ft., fly 80 ft.

21 (+5) 12 (+1) 21 (+5) 18 (+4) 15 (+2) 19 (+4)

Saving Throws Dex +5, Con +9, Int +8, Cha +8
Skills Arcana +8, History +8, Insight +6, Investigation +8, Perception +6, Stealth +5
Damage Immunities psychic
Senses darkvision 120 ft., truesight 30 ft., passive Perception 16
Languages Common, Draconic, Deep Speech, telepathy 120 ft.
Challenge 10 (5,900 XP)
Proficiency Bonus +4


  • Pierce the Veil. When a creature the catonoctrix can see is stunned by Mind Ravage, the catonoctrix learns one secret the creature knows.


A blackened, wyvern-like beast with leather purple wings soars the skies. The glowing eyes within its malformed, crystalline skull scour the area.

A catonoctrix is not a natural being. It exists due to mutations a drake or, more rarely, an immature dragon undergoes either by exposure to otherworldly realms and energies or from experimentation by depraved creatures, such as aboleths or mad wizards. As a result of its newfound intelligence and power, the catonoctrix is twisted by a desire for knowledge either in service of a master or for its own warped obsessions. It satiates this desire by any means necessary, even if it means tearing its victim’s mind apart at the seams.

Deceitful Diviners. A catonoctrix’s transformation gives it great psychic power and some measure of precognition. It uses this power to manipulate others, often by providing creatures with readings that are accurate but twisted in a way that encourages the creature to aid the catonoctrix’s overall schemes. These manipulative tactics lead some to refer to them as “augur beasts” and revere them as all-knowing benefactors. A catonoctrix uses this advantage to weave its way into civilizations, subtly controlling the masses to further its long-reaching agenda.

Section 15: Copyright Notice

Tome of Beasts 3 © 2022 Open Design LLC; Authors: Eytan Bernstein, Celeste Conowitch, Benjamin L. Eastman, Robert Fairbanks, Scott Gable, Basheer Ghouse, Richard Green, Jeremy Hochhalter, Jeff Lee, Christopher Lockey, Sarah Madsen, Ben Mcfarland, Jonathan Miley, Kelly Pawlik, Sebastian Rombach, Chelsea Steverson, Brian Suskind, Mike Welham

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