most secrets with only about flayers for long

Book of Vile Darkness

Magic Items Dungeon Master’s Guide

stone cracks and turns to powder if the book rests on it long enough. Whenever a creature that isn’t a Fiend or an Undead attunes to the Book of Vile Darkness, that creature makes a DC 17

remains with you only as long as you strive to work evil in the world. If you fail to perform at least one evil act within the span of 10 days, or if you willingly perform a good act, the book

Demonomicon of Iggwilv

Magic Items Dungeon Master’s Guide

general chapters remain, ever revealing demonic secrets. Caged behind lines of script roils a secret piece of the Abyss itself, which keeps the book up-to-date, no matter how many pages are removed, and

finish a Long Rest, if you and the Demonomicon are on the same plane of existence, one trapped creature within the book can attempt to possess you. You make a DC 20 Charisma saving throw. On a failed

Young Spirit Dragon

Monsters Forgotten Realms: Adventures in Faerûn

minute, it succeeds automatically.Curious and self-confident, young spirit dragons can cause trouble for a region’s other denizens, by either unleashing long-buried evils or misusing scarcely

artificers. 3 Jhaamdath, a prehistoric psiocracy. 4 Myth Drannor, a legendary city of magic. 5 Netheril, an empire of arcane secrets. 6 Ostoria, the first kingdom of the giants

Manshoon

Monsters Forgotten Realms: Adventures in Faerûn

;ve outlived their usefulness. Manshoon doesn’t care who suffers so long he’s able to crush his many enemies and force his subjects into paranoid and eager obedience. History The

knowledge and personal secrets. The Zhentarim wouldn’t have become the organization it is today—one where treachery and subterfuge are the order of the day—without Manshoon’s

Derro

Monsters Mordenkainen Presents: Monsters of the Multiverse

lone derro may seem pitiable, but a cackling, spitting, growling, howling horde of them is horrifying to behold. Fractious in groups and individually weak, derro would have died out long ago but for

some duergar, derro are descended from a dwarven community that was left behind when the others escaped the rule of mind flayers. These remnants were so distorted by the mind flayers’ psionic

Mind Flayer Prophet

Monsters Phandelver and Below: The Shattered Obelisk

Awareness. The mind flayer has advantage on initiative rolls and can’t be surprise;surprised as long as it doesn’t have the incapacitated condition. Magic Resistance. The mind flayer has

monster, plane shift (self only), true seeingSome mind flayers dedicate their lives to channeling abstruse truths from beyond reality. This insight gives them preternatural senses and allows them to

Gray Dwarf (Duergar) Legacy

Species Sword Coast Adventurer's Guide

thus made them into the superior race. Duergar have no appreciation for beauty, that ability having been erased from their minds by the mind flayers long ago and any thought of recapturing it

The gray dwarves, or duergar, live deep in the Underdark. After delving deeper than any other dwarves, they were enslaved by mind flayers for eons. Although they eventually won their freedom, these

Alhoon

Monsters Mordenkainen Presents: Monsters of the Multiverse

that path is long and fraught with barriers. Alhoons are mind flayers who have used a shortcut to attain a lichlike state. Elder brains forbid mind flayers from pursuing magic power aside from psionics

alhoon targets one creature it can see within 60 feet of it that is casting a spell. If the spell is 3rd level or lower, the spell fails, but any spell slots or charges are not wasted.Mind flayers that

Cranium Rat

Monsters Mordenkainen Presents: Monsters of the Multiverse

+4", "rollType":"to hit", "rollAction":"Bite"} to hit, reach 5 ft., one target. Hit: 1 piercing damage.Mind flayers create cranium rats by bombarding rat;rats with psionic energy. If enough cranium

their heightened intelligence for as long as the swarm persists. The swarm also awakens latent psionic abilities implanted within each cranium rat by its mind flayer creators, bestowing upon the swarm

Derro Savant

Monsters Mordenkainen Presents: Monsters of the Multiverse

energy in a 5-foot-wide line that is 60 feet long. Each creature in the line must make a DC 12 Dexterity saving throw, taking 21 (6d6);{"diceNotation":"6d6", "rollType":"damage", "rollAction

powerful. A lone derro may seem pitiable, but a cackling, spitting, growling, howling horde of them is horrifying to behold. Fractious in groups and individually weak, derro would have died out long

Berbalang

Monsters Mordenkainen Presents: Monsters of the Multiverse

Astral Plane. Obsessed with gathering secrets, both from the gods they inhabit and from the bones of dead creatures, they call forth the spirits of the dead and force them to divulge what they learned in

life. Berbalangs prefer to speak only to dead things, and specifically only to the spirits they call forth in the hope of learning secrets. They record their stories on the bones that once belonged

Berbalang Legacy

Monsters Mordenkainen’s Tome of Foes

Spectral Duplicate (Recharges after a Short or Long Rest). As a bonus action, the berbalang creates one spectral duplicate of itself in an unoccupied space it can see within 60 feet of it. While the

gathering secrets, both from the gods they inhabit and from the bones of dead creatures, they call forth the spirits of the dead and force them to divulge what they learned in life. Speakers of the Dead

Swarm of Cranium Rats

Monsters Mordenkainen Presents: Monsters of the Multiverse

points or fewer, plus 22 (5d8);{"diceNotation":"5d8", "rollType":"damage", "rollAction":"Bites", "rollDamageType":"psychic"} psychic damage. Spellcasting (Psionics). As long as it has more than half

, comprehend languages, detect thoughts 1/day each: confusion, dominate monsterMind flayers create cranium rat;cranium rats by bombarding rat;rats with psionic energy. Cranium rats are somewhat smarter than

Tabaxi Legacy

Species Volo's Guide to Monsters

tabaxi rarely stay in one place for long. Their innate nature pushes them to leave no secrets uncovered, no treasures or legends lost. Wandering Outcasts Most tabaxi remain in their distant

replaced with a new obsession. Objects remain intriguing only as long as they still hold secrets. A tabaxi rogue could happily spend months plotting to steal a strange gem from a noble, only to trade it

Gith Legacy

Species Mordenkainen’s Tome of Foes

The story of the gith is rooted in a cruel twist of cosmic fate. Inspired by the great leader for whom the race is named, the gith rose up to overthrow the mind flayers that held them in

to plunder the Material Plane and other worlds, bringing treasures and slaves back to their ageless realm. At the same time, they hunt down and kill mind flayers whenever possible, as recompense for

Sul Khatesh

Monsters Eberron: Rising from the Last War

","rollAction":"Magic Staff","rollDamageType":"force"} force damage. Arcane Cataclysm (Recharges after a Long Rest). Sul Khatesh conjures orbs of magical energy that plummet to the ground at three

temporary hit points per level of that spell. Maddening Secrets (Costs 3 Actions). Sul Khatesh whispers an arcane secret into the mind of a creature she can see within 60 feet of her. The target must

Countess Sansuri

Monsters Storm King's Thunder

search of long-lost Ostorian treasures and battlegrounds. Like archaeologists, they seek to uncover secrets of the past and retrieve relics of their ancient history to impress the gods. Sansuri, a powerful

wizard, is searching for something more: a long-lost trove of dragon magic, hidden away by her ancestors. Once cloud giants knock storm giants from the pinnacle of the ordning, she plans to use her

Psurlon Leader

Monsters Spelljammer: Adventures in Space

end of its body, and a superior intellect. Other psurlons look to the two-headed ones for leadership. Psurlons Psurlons are malevolent, wormlike creatures that were ejected from the Far Realm long

ago. They now live on the Astral Plane. They have legs that end in hooves and arms that end in hands with three long fingers. A psurlon’s eyeless head resembles that of an earthworm, capped by a

Gynosphinx Legacy

Monsters Basic Rules (2014)

spells, using a spell slot as normal.A Sphinx’s Lair A sphinx presides over an ancient temple, sepulcher, or vault, within which are hidden divine secrets and treasures beyond the reach of

finishes a short or long rest: The flow of time is altered such that every creature in the lair must reroll initiative. The sphinx can choose not to reroll. The effects of time are altered such

Duergar Stone Guard

Monsters Mordenkainen Presents: Monsters of the Multiverse

of Enlarge. Invisibility (Recharges after a Short or Long Rest). The duergar magically turns invisible for up to 1 hour or until it attacks, it forces a creature to make a saving throw, or its

been deeply impacted by their ancestors’ captivity and torment by mind flayers; they were infused with powerful psionic abilities but also a profound gloom. In some, this strain of sorrow

Book of Vile Darkness Legacy

Magic Items Dungeon Master’s Guide (2014)

The contents of this foul manuscript of ineffable wickedness are the meat and drink of those in evil’s thrall. No mortal was meant to know the secrets it contains, knowledge so horrid that to

powder if the book rests on it long enough. A creature attuned to the book must spend 80 hours reading and studying it to digest its contents and reap its benefits. The creature can then freely modify

Lorehold Apprentice

Monsters Strixhaven: A Curriculum of Chaos

arcane artifacts and speaking with long-dead adventurers to uncover secrets lost to time. Though many Lorehold students bury themselves in old tomes, others take a more cavalier approach to their

Lorehold Pledgemage

Monsters Strixhaven: A Curriculum of Chaos

Lorehold apprentice;apprentices and then as pledgemages—study the magic of the past, searching for arcane artifacts and speaking with long-dead adventurers to uncover secrets lost to time. Though

Duergar Xarrorn

Monsters Mordenkainen Presents: Monsters of the Multiverse

-foot cone of fire or a line of fire 30 feet long and 5 feet wide. Each creature in that area must make a DC 12 Dexterity saving throw, taking 10 (3d6);{"diceNotation":"3d6", "rollType":"damage

", "rollAction":"Fire Spray", "rollDamageType":"fire"} fire damage on a failed save, or half as much damage on a successful one. Invisibility (Recharges after a Short or Long Rest). The duergar magically

Psurlon Ringer

Monsters Spelljammer: Adventures in Space

recognize it for what it is. Psurlons Psurlons are malevolent, wormlike creatures that were ejected from the Far Realm long ago. They now live on the Astral Plane. They have legs that end in

hooves and arms that end in hands with three long fingers. A psurlon’s eyeless head resembles that of an earthworm, capped by a maw ringed with teeth. Psurlons adorn themselves in richly colored

Psurlon

Monsters Spelljammer: Adventures in Space

each: disguise self, mage armor (self only) 1/day: suggestionPsurlons are malevolent, wormlike creatures that were ejected from the Far Realm long ago. They now live on the Astral Plane. They have

legs that end in hooves and arms that end in hands with three long fingers. A psurlon’s eyeless head resembles that of an earthworm, capped by a maw ringed with teeth. Psurlons adorn themselves in

Encephalon Cluster

Monsters Phandelver and Below: The Shattered Obelisk

saving throw or have the prone condition. If this attack reduces the target to 0 hit points, the target immediately dies and is consumed by the cluster. Spawn Progeny (Recharges after a Short or Long Rest

and forgotten caverns, spewing warped progeny so it can multiply. As such, many mind flayers view encephalon clusters as insidious viruses. If left unchecked, a single encephalon cluster can quickly

Baernaloth

Monsters Planescape: Adventures in the Multiverse

primal evil power before other yugoloths or that they come from an epoch before the current manifestation of the planes. Baernaloths refuse to say, but most obsess over secrets and obscene lore regarding

", "rollAction":"Consume Suffering"} hit points. Discover Secrets. The baernaloth uses Spellcasting to cast detect thoughts. A creature targeted by the spell cast in this way takes 13 (3d8);{"diceNotation":"3d8

Duergar Soulblade

Monsters Mordenkainen Presents: Monsters of the Multiverse

", "rollType":"damage", "rollAction":"Soulblade", "rollDamageType":"force"} force damage while under the effect of Enlarge. Invisibility (Recharges after a Short or Long Rest). The duergar magically turns

reaches of the Underdark and other sunless realms. Their personalities and abilities have been deeply impacted by their ancestors’ captivity and torment by mind flayers; they were infused with

Astral Elf Warrior

Monsters Spelljammer: Adventures in Space

Long ago, some elves ventured to the Astral Plane to be closer to their gods. There, they ceased to age and could exist indefinitely without sustenance. Astral elves were among the first creatures to

numerous invaders, including psurlons, mind flayers, and githyanki. When dealing with others, astral elves customarily cover their faces with ornate visors, becoming faceless extensions of their gods

Duergar Kavalrachni

Monsters Mordenkainen Presents: Monsters of the Multiverse

Invisibility (Recharges after a Short or Long Rest). The duergar magically turns invisible for up to 1 hour or until it attacks, it forces a creature to make a saving throw, or its concentration is

are dwarves of the deep reaches of the Underdark and other sunless realms. Their personalities and abilities have been deeply impacted by their ancestors’ captivity and torment by mind flayers

Androsphinx Legacy

Monsters Basic Rules (2014)

long rest, the roar is louder and the effect is different, as detailed below. Each creature within 500 feet of the sphinx and able to hear the roar must make a saving throw. First Roar. Each creature

ancient temple, sepulcher, or vault, within which are hidden divine secrets and treasures beyond the reach of mortals. Lair Actions On initiative count 20 (losing initiative ties), the sphinx can

Bard Legacy

Classes Basic Rules (2014)

Humming as she traces her fingers over an ancient monument in a long-forgotten ruin, a half-elf in rugged leathers finds knowledge springing into her mind, conjured forth by the magic of her song

set bards apart from their fellows. Only rarely do bards settle in one place for long, and their natural desire to travel—to find new tales to tell, new skills to learn, and new discoveries

Enhanced Sphinx

Monsters Lost Laboratory of Kwalish

, within which are hidden divine secrets and treasures beyond the reach of mortals. Lair Actions On initiative count 20 (losing initiative ties), the sphinx can take a lair action to cause one of the

following magical effects; the sphinx can’t use an effect again until it finishes a short or long rest: The flow of time is altered such that every creature in the lair must reroll initiative

Tomb Tapper

Monsters Icewind Dale: Rime of the Frostmaiden

their enemies, most notably the magic-devouring, funnel-shaped creatures known as phaerimm. Other creatures targeted by the thaluud include mind flayers, derro, drow, and duergar. Tomb tappers

they acquire, instead choosing to protect and venerate such items. Tappers spend their long lives in the search for the source of all magic, which they believe to be hidden deep in the Underdark. They

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