Sometimes known as the Astral Plane, the Astral Sea is essentially DND’s version of outer space.
Here’s a list of the best monsters to use for the Astral Sea.
This ooze has a ton of resistances and immunities tailored for high-level parties.
The ooze also has Legendary Resistances, magic resistance, and a ton of restraining and engulfing moves.
Use this monster to keep an overly confident party in check.
Consider employing a Pirate Admiral and their astronautical crew in a wild space encounter.
Just verify you spend time fleshing out their crew and ship to give the encounter a real flare.
However, they make for a fun, enigmatic encounter that players aren’t going to easily forget.
These beings are neutral, and really only attack if threatened.
Their abilities range from passing through creatures to inflicting damage to healing and blessing themselves with their innate spellcasting.
Use an encounter with these Iotas to first introduce your players to the wonders of the Astral Sea.
These powerful celestials are large angels that protect the multiverse.
Mind Flayer Nautiloid by Noor Rahman
With a wide host of abilities and resistances, they’re not easily overcome.
For extra fun during the encounter, before combat starts, engage in a roleplay scenario first.
Use a Psychic Gray Ooze for fun Astral Sea flavor.
Blob of Annihilation by Mathias Kollros
They also make for great antagonists, as their devious schemes and tricks often threaten the Material Plane.
4Slaadi
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Various
Slaadi come in many different forms and originate from theextraplanar realm of Limbo.
As planar travelers though, they can fit right at home in the Astral Sea if need be.
Blob of Annihilation by Mathias Kollros
Slaadi almost look like large frogs or amphibians.
But don’t let their appearance fool you; they can be formidable opponents in combat.
Slaadi are broken down into different colors.
Art by Alexandre Honoré
Depending on which one you go for, encounters against Slaadi can be easy or nearly lethal.
3Grick
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For fans of Dune, consider using Gricks for your next space-bound adventure.
These worm-like creatures are terrifying to behold, and have beaks and tentacles to attack their foes with.
Empyreans by Nestor Ossandon Leal
Luckily, these creatures aren’t too powerful, meaning they’re well-suited for mid-level adventuring parties.
2Githyanki
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Githyanki are one of the most classic space-themed species in all of Dungeons & Dragons.
Some modules even allow you to play as githyanki if you so desire.
Solar by Carlo Arellano
Various githyanki creatures are perfect for random encounters as your party traverses the stars.
it’s possible for you to even use these creatures for non-combat encounters if you so desire.
Psychic Gray Ooze by Mark Behm
Mind Flayer by Michael Broussard
Red Slaad by Néstor Ossandón Leal
Grick by Domenico Cava
Githyanki by Jason Rainville
Gibbering Mouther by Helge C. Balzer
