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Mind Flayer

Monsters Monster Manual

Throw: DC 15, one creature that is Grappled by the mind flayer’s Tentacles. Failure: 55 (10d10);{"diceNotation":"10d10", "rollType":"damage", "rollAction":"Extract Brain", "rollDamageType

creature, it has the Grappled condition (escape DC 14) from all the mind flayer’s tentacles, and the target has the Stunned condition until the grapple ends. Extract Brain. Constitution Saving

Elder Brain

Monsters Mordenkainen Presents: Monsters of the Multiverse

Creature Sense. The elder brain is aware of the presence of creatures within 5 miles of it that have an Intelligence score of 4 or higher. It knows the distance and direction to each creature, as

this manner. Legendary Resistance (3/Day). If the elder brain fails a saving throw, it can choose to succeed instead. Magic Resistance. The elder brain has advantage on saving throws against spells

Gnome Ceremorph

Monsters Icewind Dale: Rime of the Frostmaiden

Innate Spellcasting (Psionics). The ceremorph’s innate spellcasting ability is Intelligence (spell save DC 15). It can innately cast the following spells, requiring no components: At will

Weapon Attack: +7;{"diceNotation":"1d20+7","rollType":"to hit","rollAction":"Tentacles"} to hit, reach 5 ft., one creature. Hit: 15 (2d10 + 4);{"diceNotation":"2d10+4","rollType":"damage","rollAction

Eater of Knowledge

Monsters Planescape: Adventures in the Multiverse

attacks hit the same creature and the target is Large or smaller, it has the grappled condition (escape DC 14) and must succeed on a DC 15 Intelligence saving throw or have the stunned condition until the

":"damage", "rollAction":"Slam", "rollDamageType":"bludgeoning"} bludgeoning damage. Extract Brain. Melee Weapon Attack: +7;{"diceNotation":"1d20+7", "rollType":"to hit", "rollAction":"Extract Brain

Infected Elder Brain

Monsters Phandelver and Below: The Shattered Obelisk

Creature Sense. The elder brain is aware of creatures within 1 mile of itself that have an Intelligence score of 4 or higher. It knows the distance and direction to each creature, as well as each one

. Magic Resistance. The elder brain has advantage on saving throws against spells and other magical effects. Telepathic Hub. The elder brain can use its telepathy to initiate and maintain telepathic

Brain Breaker

Monsters Phandelver and Below: The Shattered Obelisk

Creature Sense. The brain breaker is aware of creatures within 1 mile of itself that have an Intelligence score of 4 or higher. It knows the distance and direction to each creature, as well as each

. Magic Resistance. The brain breaker has advantage on saving throws against spells and other magical effects. Telepathic Hub. The brain breaker can use its telepathy to initiate and maintain

Elder Brain Dragon

Monsters Fizban's Treasury of Dragons

dragon doesn’t require air or sleep.Multiattack. The dragon makes one Bite attack, two Claw attacks, and one Tentacle attack. Bite. Melee Weapon Attack: +15;{"diceNotation":"1d20+15","rollType":"to

hit","rollAction":"Bite"} to hit, reach 15 ft., one target. Hit: 19 (2d10 + 8);{"diceNotation":"2d10+8","rollType":"damage","rollAction":"Bite","rollDamageType":"piercing"} piercing damage plus 11

Ettin Ceremorph

Monsters Bigby Presents: Glory of the Giants

", "rollType":"to hit", "rollAction":"Tentacles"} to hit, reach 10 ft., one creature. Hit: 15 (2d10 + 4);{"diceNotation":"2d10+4", "rollType":"damage", "rollAction":"Tentacles", "rollDamageType":"psychic

"} psychic damage. If the target is Large or smaller, it has the grappled condition (escape DC 14) and must succeed on a DC 15 Intelligence saving throw or have the stunned condition until this grapple

Ruxithid the Chosen

Monsters Phandelver and Below: The Shattered Obelisk

psychic tendrils from his brain, targeting one creature that he can see within 30 feet of himself. The target must succeed on a DC 15 Dexterity saving throw or take 9 (2d8);{"diceNotation":"2d8

mind flayers, who he believes are gods.PsychicBrain Tendrils (Recharge 5–6);{"diceNotation":"1d6", "rollType":"recharge", "rollAction":"Brain Tendrils"}. Ruxithid unleashes a flurry of crystalline

Qunbraxel

Monsters Phandelver and Below: The Shattered Obelisk

Tentacle attack. Tentacle. Melee Weapon Attack: +8;{"diceNotation":"1d20+8", "rollType":"to hit", "rollAction":"Tentacle"} to hit, reach 5 ft., one creature. Hit: 15 (2d10 + 4);{"diceNotation":"2d10+4

, range 120 ft., one target. Hit: 20 (3d10 + 4);{"diceNotation":"3d10+4", "rollType":"damage", "rollAction":"Eldritch Bolt", "rollDamageType":"force"} force damage. Extract Brain. Melee Weapon Attack

Mindblasting Cap

Magic Items Phandelver and Below: The Shattered Obelisk

This soft, violet cap bears stitching in the pattern of folds on a brain. As a bonus action while wearing the cap, you can project psychic energy in a 60-foot cone. Each creature in that area must

make a DC 15 Intelligence saving throw. On a failed save, a creature takes 5d8 psychic damage and has the stunned condition for 1 minute. On a successful save, the creature takes half as much damage

Vampiric Mind Flayer

Monsters Van Richten’s Guide to Ravenloft

);{"diceNotation":"1d6+4","rollType":"damage","rollAction":"Tentacles","rollDamageType":"piercing"} piercing damage, and if the target is a creature, it is grappled (escape DC 15). Drink Sapience. The

mind flayer targets one creature it is grappling. The target must succeed on a DC 15 Wisdom saving throw or take 14 (4d6);{"diceNotation":"4d6","rollType":"damage","rollAction":"Drink Sapience

Dyrrn

Monsters Eberron: Rising from the Last War

fails and is wasted. The corrupted creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. Extract Brain. Melee Weapon Attack: +15

;{"diceNotation":"1d20+15","rollType":"to hit","rollAction":"Extract Brain"} to hit, reach 5 ft., one incapacitated creature grappled by Dyrrn. Hit: 55 (10d10);{"diceNotation":"10d10","rollType":"damage

Encephalon Gemmule

Monsters Phandelver and Below: The Shattered Obelisk

chance to mutate into what is known as an encephalon cluster—a ravenous, slimy, psionic, brain-shaped mass that spawns horrors called encephalon gemmules.PsychicLeech. The gemmule targets one

’t use Leech again until it detaches. It can detach itself by spending 5 feet of its movement. As an action, the target or a creature within 5 feet of the target can detach the gemmule by succeeding on a DC 15 Strength check.

Neothelid

Monsters Mordenkainen Presents: Monsters of the Multiverse

","rollAction":"Tentacles"} to hit, reach 15 ft., one target. Hit: 21 (3d8 + 8);{"diceNotation":"3d8+8","rollType":"damage","rollAction":"Tentacles","rollDamageType":"bludgeoning"} bludgeoning damage

external assault, and the elder brain is killed, the colony’s tadpoles are suddenly freed from their fate. They no longer serve as food—and are no longer fed by their caretakers. Driven by

Dragonflesh Abomination

Monsters Fizban's Treasury of Dragons

", "rollAction":"Tail"} to hit, reach 15 ft., one target. Hit: 10 (1d12 + 4);{"diceNotation":"1d12+4", "rollType":"damage", "rollAction":"Tail", "rollDamageType":"bludgeoning"} bludgeoning damage. If the target

is a creature, it must succeed on a DC 15 Strength saving throw or be knocked prone. Acidic Spit. Ranged Weapon Attack: +5;{"diceNotation":"1d20+5", "rollType":"to hit", "rollAction":"Acidic Spit

Zuggtmoy

Monsters Mordenkainen Presents: Monsters of the Multiverse

. Hit: 15 (2d8 + 6);{"diceNotation":"2d8+6", "rollType":"damage", "rollAction":"Pseudopod", "rollDamageType":"force"} force damage plus 9 (2d8);{"diceNotation":"2d8", "rollType":"damage", "rollAction

a victim’s brain, turning it into a fanatic servitor. Each victim gains the Spore Kissed trait. Spore Kissed. This creature is immune to the charmed and frightened conditions. In addition

Mind Flayer Legacy

Monsters Monster Manual (2014)

Intelligence (spell save DC 15). It can innately cast the following spells, requiring no components: At will: detect thoughts, levitate 1/day each: dominate monster, plane shift (self only)Tentacles

. Melee Weapon Attack: +7;{"diceNotation":"1d20+7","rollType":"to hit","rollAction":"Tentacles"} to hit, reach 5 ft., one creature. Hit: 15 (2d10 + 4);{"diceNotation":"2d10+4","rollType":"damage

Mind Flayer Arcanist Legacy

Monsters Monster Manual (2014)

DC 15) and must succeed on a DC 15 Intelligence saving throw or be stunned until this grapple ends. Extract Brain. Melee Weapon Attack: +7;{"diceNotation":"1d20+7","rollType":"to hit","rollAction

spellcasting ability is Intelligence (spell save DC 15). It can innately cast the following spells, requiring no components: At will: detect thoughts, levitate 1/day each: dominate monster, plane shift (self

Brain in a Jar (Noncore)

Monsters Lost Laboratory of Kwalish

","rollAction":"Mind Blast"}. The brain in a jar magically emits psychic energy in a 60-foot cone. Each creature in that area must succeed on a DC 15 Intelligence saving throw or take 13 (2d8 + 4

Detect Sentience. The brain in a jar can sense the presence and location of any creature within 300 feet of it that has an Intelligence of 3 or higher, regardless of interposing barriers, unless the

Elder Brain Legacy

Monsters Volo's Guide to Monsters

Creature Sense. The elder brain is aware of the presence of creatures within 5 miles of it that have an Intelligence score of 4 or higher. It knows the distance and direction to each creature, as

this manner. Innate Spellcasting (Psionics). The elder brain’s innate spellcasting ability is Intelligence (spell save DC 18). It can innately cast the following spells, requiring no components

Mind Flayer Psion Legacy

Monsters Volo's Guide to Monsters

spellcasting ability is Intelligence (spell save DC 15; +7;{"diceNotation":"1d20+7","rollType":"to hit","rollAction":"Innate Spellcasting"} to hit with spell attacks). It can innately cast the following

. Melee Weapon Attack: +7;{"diceNotation":"1d20+7","rollType":"to hit","rollAction":"Tentacles"} to hit, reach 5 ft., one creature. Hit: 15 (2d10 + 4);{"diceNotation":"2d10+4","rollType":"damage

Mind Flayer Lich (Illithilich) Legacy

Monsters Volo's Guide to Monsters

":" Tentacles","rollDamageType":"psychic"} psychic damage. If the target is Large or smaller, it is grappled(escape DC 15) and must succeed on a DC 20 Intelligence saving throw or be stunned until this grapple

ends. Extract Brain. Melee Weapon Attack: +12;{"diceNotation":"1d20+12","rollType":"to hit","rollAction":"Extract Brain"} to hit, reach 5 ft., one incapacitated humanoid grappled by the lich. Hit: 55

Blue Slaad (control gem variant) Legacy

Monsters Monster Manual (2014)

point. Control Gem. Implanted in the slaad's brain is a magic control gem. The slaad must obey whoever possesses the gem and is immune to being charmed while so controlled. Certain spells can be used to

":"damage","rollAction":"Claw","rollDamageType":"slashing"} slashing damage. If the target is a humanoid, it must succeed on a DC 15 Constitution saving throw or be infected with a disease called chaos

Brain in Iron

Monsters Infernal Machine Rebuild

","rollAction":"Mind Blast"}. The brain in a jar magically emits psychic energy in a 60-foot cone. Each creature in that area must succeed on a DC 15 Intelligence saving throw or take 13 (2d8 + 4

Detect Sentience. The brain in a jar can sense the presence and location of any creature within 300 feet of it that has an Intelligence of 3 or higher, regardless of interposing barriers, unless the

Death Slaad (control gem variant) Legacy

Monsters Monster Manual (2014)

is wearing or carrying isn't transformed. It reverts to its true form if it dies. Innate Spellcasting. The slaad's innate spellcasting ability is Charisma (spell save DC 15, +7;{"diceNotation":"1d20+7

Gem. Implanted in the slaad's brain is a magic control gem. The slaad must obey whoever possesses the gem and is immune to being charmed while so controlled. Certain spells can be used to acquire the

Brain in a Jar

Compendium - Sources->Dungeons & Dragons->Infernal Machine Rebuild

Brain in a Jar A brain in a jar is the undead consciousness of a sapient creature, kept alive by magical means. Some brains in jars take up that state willingly to continue the work they did in life

. Others are transformed as punishment, forced to endure endless contemplation with no way to interact with the world. Brain in a Jar Medium undead, any alignment Armor Class 11 (natural armor

Brain in a Jar

Compendium - Sources->Dungeons & Dragons->Icewind Dale: Rime of the Frostmaiden

Brain in a Jar Through an eldritch ritual combining alchemy, necromancy, and grim surgical precision, the brain of a mortal being (willing or unwilling) is encased in a glass jar filled with

preserving fluids and the liquefied goop of their body’s flesh. The transformation renders the brain immortal and imbues it with psionic power, so that it can spend eternity plotting and executing its desires

Brain in a Jar

Compendium - Sources->Dungeons & Dragons->Van Richten’s Guide to Ravenloft

Brain in a Jar Through rituals combining alchemy, necromancy, and grim surgical precision, the brain of a mortal being is encased in a glass jar filled with preserving fluids and the liquefied goop

of their body’s flesh. The transformation renders the brain ageless and imbues it with psionic power, so that it can spend eternity plotting and executing its desires. A brain in a jar can speak

Eater of Knowledge

Compendium - Sources->Dungeons & Dragons->Planescape: Adventures in the Multiverse->Morte’s Planar Parade

ability (spell save DC 15). It must have consumed the requisite number of brains to cast the spell, as indicated: 1/day each: plane shift (self only, 0 brains), detect magic (1 brain), silent image (2

Eater of Knowledge David Auden Nash Originally created by the mind flayer god-brain Ilsensine and now produced by some of that god’s followers, eaters of knowledge are lumbering, bipedal masses of

Elder Brain

Compendium - Sources->Dungeons & Dragons->Monsters of the Multiverse

akin to an afterlife. Elder Brain Large Aberration (Mind Flayer), Typically Lawful Evil Armor Class 10 Hit Points 210 (20d10 + 100) Speed 5 ft., swim 10 ft. STR 15 (+2) DEX 10 (+0

creature, it is grappled (escape DC 15) and takes 9 (1d8 + 5) psychic damage at the start of each of its turns until the grapple ends. The elder brain can have up to four targets grappled at a time. Mind

Elder Brain Dragon

Compendium - Sources->Dungeons & Dragons->Fizban's Treasury of Dragons

Elder Brain Dragon One of the few consolations available to those who must contend with a mind flayer colony is the limit of its reach, which spreads only as far as the influence of the colony’s

elder brain. But this small solace withers away when a colony manages to capture a dragon. Teams of mind flayers bind the dragon, which is subject to a gruesome transformation as the elder brain latches

Ulitharid

Compendium - Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage

an elder brain. The staff serves no other purpose. Ulitharid Large aberration, lawful evil Armor Class 15 (breastplate) Hit Points 127 (17d10 + 34) Speed 30 ft. STR 15(+2) DEX 12

authority. In others, the elder brain perceives the ulitharid as a potential rival, manipulating or quashing the ulitharid’s ambitions accordingly. When an ulitharid finds sharing leadership with an

Meenlock

Compendium - Sources->Dungeons & Dragons->Volo's Guide to Monsters

transformation of the area into a brine pool that surrounds an embryonic elder brain. Ulitharid Large aberration, lawful evil Armor Class 15 (breastplate) Hit Points 127 (17d10 + 34) Speed 30 ft. STR

. Meenlock Small fey Armor Class 15 (natural armor) Hit Points 31 (7d6 + 7) Speed 30 ft. STR 6 (−2) DEX 15 (+2) CON 12 (+1) INT 11 (+0) WIS 10 (+0

Neh-thalggu

Compendium - Sources->Dungeons & Dragons->Spelljammer: Adventures in Space->Boo’s Astral Menagerie

Neh-thalggu Known throughout the multiverse as brain collectors, neh-thalggu consume the brains of Humanoids and use them as receptacles to enhance their magical abilities. Neh-thalggu are born in

one containing a brain the neh-thalggu has consumed. After a neh-thalggu kills a victim, it uses its pincers to cut open the victim’s head and remove the brain. It then swallows the brain whole. The

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