Monstrous Compendium Vol. 1: Spelljammer Creatures
This bestiary provides game statistics and lore for ten monsters that are suitable for any Dungeons & Dragons campaign. These monsters include old favorites from past editions of the game as well as monsters created for the current edition. The creatures in this bestiary are organized alphabetically.
If you are unfamiliar with the monster stat block format, read the introduction of the Monster Manual before proceeding further. It explains stat block terminology and gives rules for various monster traits—information that isn’t repeated here.
Creature Summaries
The creatures in this bestiary are briefly described in the Creature Summaries table.
| Creature | CR | Summary |
|---|---|---|
| Asteroid spider | 15 | Gargantuan Monstrosity that lives in space and feeds on the crews of spelljamming ships |
| Clockwork horror | 2 | Small Construct of insectile design that seeks to build others of its kind |
| Eldritch lich | 15 | Medium Undead spellcaster linked to a Great Old One |
| Fractine | 9 | Large Construct that traps other creatures in a demiplanar prison and can shatter into smaller versions of itself |
| Gadabout | 1/8 | Medium Plant that facilitates safe travel in the airless void of Wildspace |
| Goon balloon | 1/8 | Medium Aberration that resembles a balloon with claws and has a nasty disposition |
| Nightmare beast | 16 | Gargantuan Monstrosity with a disintegrating gaze |
| Puppeteer parasite | 3 | Tiny Aberration that latches onto other creatures and either feeds on them or psionically controls them |
| Star lancer | 2 | Large Celestial from the Astral Plane that can turn invisible and serve as a mount |
| Yggdrasti | 7 | Gargantuan Plant that travels through space in search of prey |
Creatures (A-Z)
Asteroid Spider
An asteroid spider is a menace native to Wildspace and the Astral Sea. A full-grown specimen has a body 30 feet in diameter and legs that are at least 30 feet long. When it wraps its legs tightly around its body and closes its eyes, the asteroid spider resembles nothing so much as a giant, lifeless rock in space—hence its name.
An asteroid spider has its own gravity plane and air envelope, as well as multiple spinnerets with which it can create web strands. Its living brain functions like a spelljamming helm, allowing the spider to travel through Wildspace without a ship. It often haunts asteroid belts, lurking among normal asteroids until a spelljamming ship comes close enough to be detected. The spider then snares the ship before using web strands to catch crew members and reel them toward its snapping jaws.
Gargantuan Monstrosity, Typically Neutral Evil
Armor Class 17 (natural armor)
Hit Points 348 (24d20 + 96)
Speed 60 ft., fly 60 ft. (hover)
Saving Throws Con +9, Wis +6
Skills Perception +11, Stealth +5
Senses darkvision 120 ft., blindsight 120 ft. while the spider’s eyes are closed, passive Perception 21
Languages —
Challenge 15 (13,000 XP) Proficiency Bonus +5
False Appearance. If the spider is motionless, has its eyes and mouth closed, and has its legs wrapped around its body at the start of combat, it has advantage on its initiative roll. Moreover, if a creature hasn’t observed the spider move or act, that creature must succeed on a DC 18 Intelligence (Investigation) check to discern that the spider is anything other than an asteroid.
Legendary Resistance (3/Day). If the spider fails a saving throw, it can choose to succeed instead.
Unusual Nature. The spider doesn’t require air.
Actions
Multiattack. The spider makes two Web Strand attacks, uses Reel, and makes two Bite attacks.
Bite. Melee Weapon Attack: +13 to hit, reach 10 ft., one target. Hit: 21 (3d8 + 8) piercing damage plus 10 (3d6) acid damage.
Web Strand. Ranged Weapon Attack: +13 to hit, reach 120 ft., one creature. Hit: The target is grappled (escape DC 18). The web strand can be attacked and destroyed (AC 12; 20 hit points; vulnerability to fire damage; immunity to bludgeoning, poison, and psychic damage). The spider can grapple up to six creatures at a time using its web strands.
Reel. The spider pulls each creature grappled by it up to 60 feet straight toward itself.
Bonus Actions
Snare Ship (1/Day). The spider weaves a magical web around a spelljamming ship it can see within 120 feet of itself. The web lasts for 1 minute and suppresses the magic of any spelljamming helm aboard the ship. Decks and other surfaces of the ship that aren’t enclosed become difficult terrain until the effect ends. The web is impervious to damage but is destroyed by a successful casting of dispel magic (DC 18).
Clockwork Horror
Clockwork horrors are ruthless insectile automatons—eldritch machines encased in adamantine or some other precious metal. They roam Wildspace in commandeered spelljamming ships, gathering the precious metals and crystals they need to build more of their kind. Clockwork horrors have no goal beyond replication and will stop at nothing to create new clockwork horrors. The time it takes for a clockwork horror to build another of its kind, assuming it has the requisite materials, is approximately ten days.
The body of a clockwork horror is about two feet in diameter, but the legs give it an overall diameter of four feet. Embedded in the front of its head is a crystal that enables the clockwork horror to see.
Clockwork horrors communicate with each other by means of clicks, whirs, and similar mechanical sounds that imitate the Thri-kreen language perfectly, leading some to speculate the first clockwork horror was the brainchild of a thri-kreen artificer. A horror can also emit light from its crystal eye, issuing dot-and-dash messages to other creatures that can see the light. Creatures besides clockwork horrors can learn this blinking light code, which is called Ziklight.
When another creature gets in its way, a clockwork horror attacks that creature with its razor-sharp mandibles and two tiny rotating saws mounted at the tips of its forelimbs. A horror can also discharge bolts of lightning from a short lightning rod embedded in its body.
When a clockwork horror dies, the magic that created it consumes it over a period of 1 minute. Its metallic body and crystal eye degrade rapidly until nothing is left but a small heap of glittering dust.
Small Construct, Typically Lawful Evil
Armor Class 18 (natural armor)
Hit Points 60 (8d6 + 32)
Speed 30 ft., climb 30 ft.
Saving Throws Str +4, Wis +4
Skills Perception +6
Damage Immunities lightning, poison
Condition Immunities blinded, charmed, deafened, exhaustion, frightened, paralyzed, petrified, poisoned
Senses darkvision 120 ft., passive Perception 16
Languages Thri-kreen, Ziklight
Challenge 2 (450 XP) Proficiency Bonus +2
Shutdown. If targeted by dispel magic, the horror must succeed on a Constitution saving throw against the caster’s spell save DC or fall unconscious for 1 minute or until it takes any damage.
Unusual Nature. The horror doesn’t require air, food, drink, or sleep.
Actions
Multiattack. The horror makes one Bite attack and two Rotating Saw attacks, or it makes two Lightning Jolt attacks.
Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 6 (1d8 + 2) piercing damage.
Rotating Saw. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 4 (1d4 + 2) slashing damage.
Lightning Jolt. Ranged Spell Attack: +4 to hit, range 120 ft., one target. Hit: 7 (1d10 + 2) lightning damage.
Spelljamming Helm Interface. The horror attaches to a spelljamming helm it can see within 5 feet of itself and attunes to the helm instantly. If another creature is already attuned to the helm, that creature’s attunement to the helm ends when the horror’s attunement begins. The horror can operate the helm even though it isn’t a spellcaster. The horror can detach from the helm as a bonus action, which ends its attunement to the helm.
Eldritch Lich
From beyond the stars, a Great Old One whispers promises of reality-defying knowledge and world-bending power. When a wizard or a warlock hears that whisper and listens too intently, they might set foot on the twisting path toward becoming an eldritch lich.
Like other liches, eldritch liches are spellcasters who have cheated death, but an eldritch lich does so by allowing a Great Old One to implant a Far Realm parasite in the lich. That parasite bestows undeath upon the spellcaster and causes strange tentacles to sprout from the body. The parasite’s mouth is visible on the lich’s torso, and the parasite guards the lich against destruction, reviving the lich a few days after death. Canny foes can sabotage an eldritch lich’s revival by slaying the lich in a magic circle, thereby forcing the lich to return in a distorted form, robbed of most of its power.
An eldritch lich constantly hears bizarre whispers from the Far Realm, to which the lich nods and mutters. Occasionally, the lich uses its telepathy to share those whispers with the minds around it.
Medium Undead, Typically Neutral Evil
Armor Class 17 (natural armor)
Hit Points 165 (22d8 + 66)
Speed 30 ft., fly 30 ft. (hover)
Saving Throws Int +9, Wis +7
Skills Arcana +14, Perception +7
Damage Resistances necrotic, poison
Condition Immunities charmed, exhaustion, frightened, paralyzed, poisoned
Senses truesight 120 ft., passive Perception 17
Languages Common, Deep Speech, telepathy 120 ft.
Challenge 15 (13,000 XP) Proficiency Bonus +5
Far Realm Parasite. Inside the lich’s torso dwells a wormlike parasite that contains the lich’s soul. When the lich dies, it implodes into the parasite, which then vanishes into the Far Realm. In 2d4 days, the parasite causes the lich to reappear within 1d4 miles of where it died. If the lich died inside a magic circle cast to contain Undead, the lich instead reappears as an otyugh with all the lich’s memories.
Legendary Resistance (4/Day). If the lich fails a saving throw, it can choose to succeed instead.
Unusual Nature. The lich doesn’t need air, food, drink, or sleep.
Actions
Multiattack. The lich makes one Parasitic Tentacle attack or uses Spellcasting. The lich also uses Psychic Whisper twice.
Parasitic Tentacle. Melee Weapon Attack: +9 to hit, reach 10 ft., one creature. Hit: 25 (6d6 + 4) piercing damage plus 25 (6d6 + 4) necrotic damage. The target must succeed on a DC 17 Constitution saving throw or be poisoned. The poisoned target can repeat the save at the end of each of its turns, ending the effect on itself on a success. The third time the target fails the save, the target dies and dissolves into a gibbering mouther that obeys the lich and uses the target’s initiative.
Psychic Whisper. The lich targets one creature it can see within 120 feet of itself. The target must succeed on a DC 17 Wisdom saving throw or take 25 (6d6 + 4) psychic damage and be stunned until the end of the lich’s next turn as incomprehensible whispers fill the target’s mind.
Spellcasting. The lich casts one of the following spells, using Intelligence as the spellcasting ability (spell save DC 17):
At will: detect magic, mage hand, prestidigitation
2/day each: dispel magic, hunger of Hadar, lightning bolt
1/day each: arcane eye, dimension door, plane shift (self only)
Reactions
Far Realm Step. Immediately after taking damage, the lich, along with any equipment it is wearing or carrying, magically teleports up to 60 feet to an unoccupied space it can see.
Form of the Great Old One
Multiple entities bear the title Great Old One. You may roll on the Great Old Ones table to determine which entity gave an eldritch lich its parasite.
| d6 | Form |
|---|---|
| 1 | Cthulhu |
| 2 | Tharizdun, the Chained God |
| 3 | Dendar, the Night Serpent |
| 4 | Ghaunadaur |
| 5 | Zargon, the Returner |
| 6 | That Which Lurks |
Fractine
A fractine is a bizarre, two-dimensional creature that flies through Wildspace and the Astral Sea, folding and refolding like a piece of origami. When it encounters another creature, it flattens into a plane that resembles a trapezoidal mirror between 9 and 13 feet tall.
Astral explorers who have encountered fractines attest that the creatures are intelligent and often allow themselves to be used as scrying sensors, their reflective surfaces substituting for the mirror needed to cast certain divination spells. While being used in this way, the fractine siphons magical energy from the spellcaster—not enough to cause harm, but enough to make the caster take notice.
A fractine needs light and magical energy to survive. It can draw sustenance from a nearby light source, spellcaster, magic item, or magical effect without causing harm to anyone or anything. A fractine that doesn’t consume light or magical energy for ten days begins to flicker. A day later, it folds in on itself and self-destructs, leaving no trace of itself behind. The destruction of a fractine is accompanied by a loud sound reminiscent of shattering glass.
A fractine attacks by falling on its targets, dealing damage as it passes through them. A fractine can also imprison a creature inside a demiplane contained within its two-dimensional form, the prisoner’s distorted reflection visible in the fractine’s glassy surface.
Bludgeoning, piercing, slashing, and thunder damage can cause a fractine to break into two smaller fractines, each one autonomous and capable of imprisoning creatures. When a fractine dies, it folds in on itself and disappears, releasing any creature trapped inside it.
Large Construct, Typically Neutral
Armor Class 14 (natural armor)
Hit Points 110 (13d10 + 39)
Speed 0 ft., fly 60 ft. (hover)
Skills Perception +8
Condition Immunities blinded, charmed, deafened, exhaustion, frightened, grappled, paralyzed, petrified, poisoned, prone, restrained, stunned
Senses blindsight 360 ft. (blind beyond this radius), passive Perception 18
Languages —
Challenge 9 (5,000 XP) Proficiency Bonus +4
Magic Resistance. The fractine has advantage on saving throws against spells and other magical effects.
Scrying Focus. A spellcaster can use the fractine as a substitute focus when casting the scrying spell or similar magic, provided the spellcaster and the fractine are within 5 feet of each other.
Two-Dimensionality. The fractine can occupy another creature’s space and vice versa. It can move through other creatures and objects as if they were difficult terrain, but it takes 5 (1d10) force damage if it ends its turn inside an object.
Unusual Nature. The fractine doesn’t require air, drink, or sleep.
Actions
Extradimensional Touch. Melee Spell Attack: +5 to hit, reach 5 ft., one target. Hit: 24 (8d6) force damage.
Bonus Actions
Imprison. The fractine targets one creature of its size or smaller in its space. The target must succeed on a DC 16 Dexterity saving throw or be imprisoned in a demiplane. While the creature is imprisoned, a distorted image of it can be seen on the fractine’s two-dimensional surface.
The demiplane moves with the fractine, has indestructible and opaque walls, and is only as big as it needs to be to contain the target, which doesn’t suffer from hunger or thirst while imprisoned. No other creature can enter the demiplane, and the fractine can’t be harmed from within the demiplane.
The fractine can imprison only one creature at a time and can release that creature as a bonus action. If the fractine is reduced to 0 hit points, any creature in the fractine’s demiplane is released instantly. A released creature reappears in an unoccupied space as close to the fractine (or where it died) as possible. A creature can leave the demiplane on its own by using magic that enables planar travel, such as the plane shift spell.
Reactions
Mirrored Damage. In response to being damaged by a creature it can see within 120 feet of itself, the fractine forces that creature to make a DC 16 Constitution saving throw. On a failed save, the creature takes 24 (8d6) force damage. On a successful save, the creature takes half as much damage.
Split. When a Large fractine that has at least 10 hit points remaining takes bludgeoning, piercing, slashing, or thunder damage from any source, it splits into two Medium fractines. The new fractines occupy the space formerly occupied by the original fractine, and each new fractine has hit points equal to half the original’s, rounded down. If the original fractine had a creature trapped in its demiplane, that creature is released when the fractine splits, reappearing in an unoccupied space as close to the new fractines as possible.
Gadabout
Gadabouts are gentle, winged creatures that can be used as personal conveyances for short-distance travel across the airless void of Wildspace. A gadabout wraps its branches around a Humanoid creature, spreads its butterfly wings, and allows its wearer to fly through space in a continuously refreshed air envelope. The gadabout’s leaves even provide a nourishing syrup that its wearer can consume in the absence of other food and water. One Humanoid can survive on these leaves for up to sixty days.
Gadabouts require sunlight and water to survive. A healthy specimen can live for 25 years. Although its preferred mode of travel is flight, a gadabout can creep slowly along the ground as well.
Elves are the only Humanoids to date who know how to grow gadabouts. Since gadabouts don’t generate seeds, each one is a valuable commodity. Mercane and dohwar merchants who come into possession of a healthy gadabout might sell it for 2,500 gp or more.
Medium Plant, Unaligned
Armor Class 11 (natural armor)
Hit Points 11 (2d8 + 2)
Speed 10 ft., fly 60 ft. (hover)
Damage Vulnerabilities fire
Condition Immunities blinded, charmed, deafened, exhaustion, frightened, paralyzed, petrified
Senses blindsight 10 ft. (blind beyond this radius), passive Perception 8
Languages —
Challenge 1/8 (25 XP) Proficiency Bonus +2
Air Envelope. If it has at least 1 hit point, the gadabout can generate an air envelope around itself when in a vacuum. This air envelope can sustain the gadabout and one other creature in its space indefinitely.
Unusual Nature. The gadabout doesn’t require food or sleep.
Actions
Multiattack. The gadabout makes two Branch attacks.
Branch. Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 3 (1d4 + 1) slashing damage.
Wrap. The gadabout enters the space of a willing Medium or Small creature within 5 feet of itself and gently wraps its branches around the target. The target is grappled (escape DC 0). Any attempt by the target to escape the grapple causes the gadabout to use its reaction to move into the nearest unoccupied space. While grappled by the gadabout, the target determines where the gadabout moves on the gadabout’s turns and accompanies the gadabout wherever it goes.
Goon Balloon
A goon balloon looks like a 5-foot-diameter beach ball with clawed feet. Unblinking eyes on the outer surface of its spherical air sac enable the creature to see in all directions at once. These eyes can produce kaleidoscopic light that tears at the minds of the goon balloon’s foes.
A goon balloon speaks by pumping air through a hidden orifice on its underside. When the goon balloon dies, the air in its sac transforms into a noxious gas that bursts from the corpse, potentially poisoning other creatures nearby.
Although they can seem playful and harmless, goon balloons are quite mean-spirited. They like to observe the suffering of other creatures and orchestrate that suffering, given half a chance.
Medium Aberration, Typically Chaotic Evil
Armor Class 10
Hit Points 6 (1d8 + 2)
Speed 20 ft., climb 20 ft.
Saving Throws Con +4, Wis +4
Skills Perception +6
Damage Vulnerabilities piercing
Senses darkvision 60 ft., passive Perception 16
Languages Deep Speech
Challenge 1/8 (25 XP) Proficiency Bonus +2
Burst. The goon balloon bursts when it drops to 0 hit points, releasing noxious gas in a 10-foot-radius sphere centered on itself. Creatures in that area must succeed on a DC 12 Constitution saving throw or be poisoned for 1 minute. A poisoned creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.
Unusual Nature. The goon balloon doesn’t require air, food, or drink.
Actions
Multiattack. The goon balloon makes two Claw attacks.
Claw. Melee Weapon Attack: +2 to hit, reach 5 ft., one target. Hit: 3 (1d6) slashing damage.
Scintillating Eye. Magical, kaleidoscopic light emanates from one of the goon balloon’s eyes as the goon balloon targets one creature it can see within 30 feet of itself. The target must make a DC 12 Wisdom saving throw, taking 6 (1d12) psychic damage on a failed save, or half as much damage on a successful one.
Bonus Actions
Float. The goon balloon moves up to 20 feet vertically in one direction without provoking opportunity attacks. If it ends this movement suspended in the air, it hovers in place. It can’t be knocked prone while airborne.
Nightmare Beast
Nightmare beasts are enormous quadrupeds that stand 20 feet tall, or 40 feet tall when rearing on their hind legs.
A nightmare beast’s legs end in claws, enabling it to climb well despite its size. Its skin is thick and tough, and its teeth are long and sharp. A pair of long, curved tusks jut from the sides of the beast’s mouth, and its large red eyes glow in the dark. The creature smashes through structures and fortifications with ease, and it doesn’t hesitate to rend foes with its claws and gore them with its tusks, but its most devastating attack is its magical ability to disintegrate foes with its terrible gaze.
Powerful spellcasters create nightmare beasts to serve as living siege engines. A single beast can lay waste to entire cities and armies.
Gargantuan Monstrosity, Typically Chaotic Evil
Armor Class 17 (natural armor)
Hit Points 232 (15d20 + 75)
Speed 30 ft., climb 30 ft.
Senses darkvision 120 ft., passive Perception 11
Languages understands the languages of its creator but can’t speak
Challenge 16 (15,000 XP) Proficiency Bonus +5
Legendary Resistance (2/Day). If the beast fails a saving throw, it can choose to succeed instead.
Siege Monster. The beast deals double damage to objects and structures.
Actions
Multiattack. The beast makes two Claw attacks and one Tusk attack.
Claw. Melee Weapon Attack: +13 to hit, reach 15 ft., one target. Hit: 14 (1d12 + 8) slashing damage, and if the target is a creature, it must succeed on a DC 21 Strength saving throw or be knocked prone.
Tusk. Melee Weapon Attack: +13 to hit, reach 15 ft., one target. Hit: 17 (2d8 + 8) slashing damage.
Disintegration Gaze (Recharge 5–6). The beast targets one creature it can see within 60 feet of itself. The target must make a DC 18 Constitution saving throw, taking 70 (10d6 + 40) force damage on a failed save, or half as much damage on a successful one. If this magical effect reduces the target to 0 hit points, the target is disintegrated and leaves nothing behind, except a pile of ashes plus whatever equipment it was wearing or carrying.
Bonus Actions
Teleport (2/Day). The beast magically teleports, along with any equipment it is wearing or carrying, up to 120 feet to an unoccupied space it can see.
Legendary Actions
The beast can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The beast regains spent legendary actions at the start of its turn.
Tusk Attack. The beast makes one Tusk attack.
Charge (Costs 2 Actions). The beast moves up to its speed without provoking opportunity attacks, then makes two Tusk attacks.
Frightful Howl (Costs 2 Actions). The beast howls as it exhales a cloud of magical fear gas in a 120-foot cone. Any creature in that area must succeed on a DC 18 Wisdom saving throw or be frightened of the beast for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.
Puppeteer Parasite
A puppeteer parasite looks like a rubbery amoeba the size of a dinner plate. Its dorsal surface is soft and glossy, while its ventral surface is lined with bony hooks. The parasite uses its hooks to attach to a wall or ceiling until suitable prey passes nearby.
A parasite that comes in physical contact with a Humanoid uses its hooks to latch onto it. The parasite can then drain life energy from that creature or use it as transportation. The parasite can also impose its will on a nearby creature, forcing the creature to comply with its wishes. Puppeteer parasites like to use Humanoid thralls as bodyguards and transports.
Tiny Aberration, Typically Neutral Evil
Armor Class 15 (natural armor)
Hit Points 71 (11d4 + 44)
Speed 10 ft., fly 30 ft. (hover)
Saving Throws Dex +4, Con +6, Wis +2
Skills Stealth +4
Damage Vulnerabilities radiant
Damage Resistances fire, necrotic, poison
Condition Immunities charmed, frightened, poisoned
Senses blindsight 60 ft. (blind beyond this radius), passive Perception 10
Languages telepathy 30 ft.
Challenge 3 (700 XP) Proficiency Bonus +2
Unusual Nature. The parasite doesn’t require air or sleep.
Actions
Cling. Melee Weapon Attack: +4 to hit, reach 5 ft., one creature. Hit: 12 (3d6 + 2) necrotic damage, and the parasite attaches to the target. While attached, the parasite can’t make Cling attacks. The parasite can detach itself by spending 5 feet of its movement. As an action, a creature within reach of the parasite can try to detach it, doing so with a successful DC 14 Strength check.
Consume Life. The parasite deals 12 (3d6 + 2) necrotic damage to one creature it is physically attached to, provided that creature isn’t a Construct or an Undead. The parasite regains hit points equal to the damage taken.
Bonus Actions
Suggestion (Psionics; 1/Day). The parasite casts the suggestion spell, requiring no spell components and using Intelligence as the spellcasting ability (spell save DC 13).
Star Lancer
Drifting in the Astral Sea are the petrified husks of dead gods, their colossal bodies riddled with natural tunnels and caverns. While exploring the innards of one of these dead gods, githyanki xenomancers found a vast cavern containing scores of winged creatures they had never encountered before. The cavern’s denizens used telepathy to question the githyanki interlopers, who promptly suggested an alliance. The winged creatures quickly developed a fondness for the githyanki.
The githyanki refer to the winged creatures as star lancers (“vah’k’rel” in the Gith tongue) and came to realize star lancers are reincarnations of the dead god’s most ardent worshipers. When a star lancer dies, its soul instantly returns to the Great Cavern that forms the hollow heart of the dead god. There, the soul becomes housed in the body of a new, fully grown star lancer that rises magically from the cavern floor. As long as the dead god and its Great Cavern remain intact, the number of star lancers in the multiverse is finite and never-changing.
A star lancer resembles a shark, albeit one that has four wings and a long tail. Its head bears a sharp protuberance that the creature uses to impale enemies.
Githyanki are fond of using star lancers as mounts, riding them across the Astral Sea in small flocks. A star lancer has the innate ability to turn itself and its rider invisible, making it ideal for stealth missions and ambushes.
Large Celestial, Typically Neutral
Armor Class 15 (natural armor)
Hit Points 60 (8d10 + 16)
Speed 0 ft., fly 50 ft.
Saving Throws Dex +4, Con +4
Skills Perception +3, Stealth +4
Damage Resistances radiant
Senses passive Perception 13
Languages Celestial, telepathy 120 ft.
Challenge 2 (450 XP) Proficiency Bonus +2
Flyby. The star lancer doesn’t provoke opportunity attacks when it flies out of an enemy’s reach.
Actions
Horn. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 7 (1d6 + 4) piercing damage. If the star lancer moved at least 20 feet straight toward the target immediately before the hit, the target takes an extra 10 (3d6) piercing damage.
Invisibility Cloak (3/Day). The star lancer and one creature riding it (chosen by the star lancer) magically turn invisible. This effect lasts until the star lancer or a creature riding it attacks or casts a spell, or until the star lancer’s concentration ends (as if concentrating on a spell). Any equipment worn or carried by the invisible creatures is also invisible for the duration of the Invisibility Cloak.
Yggdrasti
Thought to be cast-off splinters of Yggdrasil, the World Tree, yggdrasti look like gigantic, dead trees covered with barnacles. They fly through Wildspace and the Astral Sea with their topmost branches leading the way and their withered roots trailing behind them. Each one has its own gravity plane and air envelope.
Creatures sometimes try to hitch a ride on an yggdrasti to take advantage of its air envelope. A typical yggdrasti specimen has cavities inside its trunk in which Medium or smaller creatures can lurk.
Yggdrasti attack any settlements or spelljamming ships they come across without provocation. By using a speak with plants spell or similar magic, someone might be able to convince an yggdrasti to break off its attack, but the monster’s innate hatred of other living things is extremely difficult for it to suppress.
Yggdrasti sometimes make landfall and disguise themselves as ordinary trees, burying their roots in the ground to pull off the deception. They can uproot themselves at any time and use their roots to shamble awkwardly across the ground, but flying is their preferred mode of travel.
Gargantuan Plant, Unaligned
Armor Class 15 (natural armor)
Hit Points 112 (9d20 + 18)
Speed 30 ft., fly 60 ft. (hover)
Damage Resistances bludgeoning, piercing
Damage Immunities lightning
Condition Immunities blinded, deafened, exhaustion
Senses blindsight 120 ft. (blind beyond this radius), passive Perception 10
Languages —
Challenge 7 (2,900 XP) Proficiency Bonus +3
Cavities. The yggdrasti has 1d4 + 2 cavities in its trunk. Each cavity is big enough to hold one Medium creature, two Small creatures, or eight Tiny creatures. A creature inside a cavity has three-quarters cover against attacks and other effects that originate outside the cavity. The yggdrasti’s cavities aren’t connected to one another.
False Appearance. If the yggdrasti is motionless and rooted in the ground at the start of combat, it looks just like a dead tree and has advantage on its initiative roll. Moreover, if a creature hasn’t observed the rooted yggdrasti move or act, that creature must succeed on a DC 18 Intelligence (Investigation) check to discern that the yggdrasti is animate.
Lightning Conduit. If the yggdrasti is subjected to lightning damage, it is unhurt, and the lightning damage is instead divided evenly among all creatures it is grappling. In addition, the yggdrasti regains one use of Lightning Discharge.
Unusual Nature. The yggdrasti doesn’t require air or sleep.
Actions
Multiattack. The yggdrasti makes two Root attacks and uses Lightning Discharge (if available).
Root. Melee Weapon Attack: +8 to hit, reach 20 ft., one target. Hit: 12 (2d6 + 5) bludgeoning damage, and if the target is a creature, it is grappled (escape DC 15). The yggdrasti has four roots, each of which can grapple one target.
Lightning Discharge (3/Day). The yggdrasti shoots lightning at one creature within 120 feet of itself. The target must make a DC 13 Dexterity saving throw, taking 31 (7d8) lightning damage on a failed save, or half as much damage on a successful one.
Credits
Designers: Christopher Perkins, Jeremy Crawford
Art Directors: Carlo Arellano, Emi Tanji
Editors: Judy Bauer, Janica Carter
Editorial Assistance: Dan Dillon
Graphic Designer: Emi Tanji
Cover Illustrator: Hinchel Or
Interior Illustrators: Carlo Arellano, Hinchel Or
Imaging Technician: Kevin Yee
Senior Producer: Dan Tovar
Producer: Lea Heleotis
Product Manager: Chris Lindsay
