Astral dreadnought

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Astral Dreadnought
First appearancePlanescape Appendix 2
AlignmentChaotic neutral

The astral dreadnought is an outsider in the Dungeons & Dragons fantasy role-playing game.

Publication history[edit]

The creature was first depicted on the cover of the original first edition Manual of the Planes (Jeff Grubb, 1987). Although the book contained no statistics for the creature, it did make mention of the creature as an "ethereal dreadnought".[1]

The astral dreadnought was first described in second edition for the Planescape setting in the Planescape Monstrous Compendium II (TSR, 1995), by Rich Baker.[2] In a review of Planescape Monstrous Compendium Appendix II for Arcane magazine, the reviewer considered the monstrous astral dreadnought to "populate their periphery with true terror".[3]

The astral dreadnought appeared in the third edition Manual of the Planes (2001).[4]

The astral dreadnought appeared in the fourth edition Manual of the Planes (2008), again appearing on the cover in this edition.[5]

The astral dreadnought appeared again in the fifth edition supplement Mordenkainen's Tome of Foes (2018).


They attack characters wandering around the Astral Plane by attacking their silver cords (the link between a character's physical body and their astral form, which, if severed, will kill the character instantly). They also make use of powerful anti-magic to weaken characters who are dependent on magic items and spells as sources of power.

Astral dreadnoughts are solitary creatures, with no form of society, and seem to lack any form of motivation other than to devour any astral travellers who are unfortunate enough to cross their path. Very few have ever encountered an astral dreadnought; nobody has ever managed to communicate with such a creature and lived to tell the tale.

Astral dreadnoughts are, without exception, chaotic neutral creatures.

Physical description[edit]

The astral dreadnought is a gargantuan creature, reaching approximately the same size as a storm giant. It has a single black eye in the middle of its face (similar to that of a cyclops), and a gaping maw filled with razor-sharp teeth. Its tongue is dark blue. Its armored carapace is a reddish-brown color, covered with a multitude of horn-like spikes. It has two muscular forearms, which end in huge pincer-like claws. Its lower body is serpentine.

Some speculate that the astral dreadnought may not be a native of the Astral Plane, because its tail appears to have no end; rather, the infinitely long silver cord which trails off from the creature's 'tail' would imply that the astral dreadnought is, in fact, projecting its spirit from some unknown material world.


The astral dreadnought attacks using its claws and teeth in melee combat. It may try to devour its opponent by grabbing them with its claws and stuffing them into its gaping mouth, swallowing them whole. Whilst a swallowed opponent may cut its way out of the creature's belly (despite suffering large amounts of crushing and acid damage), the Astral Dreadnought may chew through and sever their opponent's silver cord.

It also uses fear gaze to terrify its opponents, with a range of 60 feet (with effects equivalent to those of a fear spell cast by a 20th level sorcerer).

The astral dreadnought's eye continually produces an anti-magic cone, with extends in front of the creature at a range of up to 60 feet. All magical and supernatural powers and effects within the creature's anti-magic cone are suppressed — including the astral dreadnought's own fear gaze. Therefore, the astral dreadnought must choose whether to activate or deactivate its anti-magic cone in order to allow the use of fear gaze.


  1. Grubb, Jeff. Manual of the Planes (TSR, 1987)
  2. Baker, Rich, Tim Beach, Wolfgang Baur, Michele Carter, and Colin McComb. Planescape Monstrous Compendium Appendix II (TSR, 1995)
  3. Webb, Trenton (January 1996). "Games Reviews". Arcane. Future Publishing (2): 71.
  4. Grubb, Jeff, Bruce R Cordell, and David Noonan. Manual of the Planes (Wizards of the Coast, 2001)
  5. Baker, Richard, John Rogers, Robert J. Schwalb, and James Wyatt. Manual of the Planes (Wizards of the Coast, 2008)

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