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Returning 35 results for 'failed brain'.
Monsters
Mordenkainen Presents: Monsters of the Multiverse
Anchor. The elder brain targets one creature it can sense within 120 feet of it and anchors it by sheer force of will. The target must make a DC 18 Charisma saving throw. On a failed save, its speed is
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
Blue Slaad (control gem variant)
Legacy
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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
remove the gem from an incapacitated slaad. Each try requires 1 minute of uninterrupted work and a successful DC 20 Wisdom (Medicine) check. Each failed attempt deals 22 (4d10);{"diceNotation":"4d10
Monsters
Spelljammer: Adventures in Space
Brain Dump. Whenever the neh-thalggu consumes a brain, it gains the magical ability to speak and understand languages known by the brain’s previous owner.
Unusual Nature. The neh-thalggu doesn
damage.
Extract Brain. Melee Weapon Attack: +4;{"diceNotation":"1d20+4","rollType":"to hit","rollAction":"Extract Brain"} to hit, reach 5 ft., one incapacitated Humanoid. Hit: 35 (10d6
Red Slaad (control gem variant)
Legacy
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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
remove the gem from an incapacitated slaad. Each try requires 1 minute of uninterrupted work and a successful DC 20 Wisdom (Medicine) check. Each failed attempt deals 22 (4d10);{"diceNotation":"4d10
Gray Slaad (control gem variant)
Legacy
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Monsters
Monster Manual (2014)
.
Regeneration. The slaad regains 10 hit points at the start of its turn if it has at least 1 hit point.
Control Gem. Implanted in the slaad’s brain is a magic control gem. The slaad must obey
uninterrupted work and a successful DC 20 Wisdom (Medicine) check. Each failed attempt deals 22 (4d10);{"diceNotation":"4d10","rollType":"damage","rollDamageType":"psychic"} psychic damage to the
Death Slaad (control gem variant)
Legacy
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Monsters
Monster Manual (2014)
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
from an incapacitated slaad. Each try requires 1 minute of uninterrupted work and a successful DC 20 Wisdom (Medicine) check. Each failed attempt deals 22 (4d10);{"diceNotation":"4d10","rollType
Green Slaad (control gem variant)
Legacy
This doesn't reflect the latest rules and lore.
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Monsters
Monster Manual (2014)
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 gem. If the slaad
slaad. Each try requires 1 minute of uninterrupted work and a successful DC 20 Wisdom (Medicine) check. Each failed attempt deals 22 (4d10);{"diceNotation":"4d10","rollType":"damage","rollDamageType
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
Monsters
Phandelver and Below: The Shattered Obelisk
grappled condition (escape DC 17) and must succeed on a DC 17 Intelligence saving throw or have the incapacitated condition until the grapple ends.
Extract Brain. Melee Weapon Attack: +9;{"diceNotation
":"1d20+9", "rollType":"to hit", "rollAction":"Extract Brain"} to hit, reach 5 ft., one incapacitated Humanoid grappled by the mind flayer. Hit: 55 (10d10);{"diceNotation":"10d10", "rollType":"damage
Monsters
Fizban's Treasury of Dragons
Constitution saving throw, taking 55 (10d10);{"diceNotation":"10d10","rollType":"damage","rollAction":"Tadpole Brine Breath","rollDamageType":"psychic"} psychic damage on a failed save, or half as
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
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
creature within 5 feet of itself and forces the target to make a DC 14 Dexterity saving throw. On a failed save, the gemmule enters the target’s space and attaches to the target. While the gemmule is
Monsters
Mordenkainen Presents: Monsters of the Multiverse
it can see within 120 feet of it:
1: Aversion Ray. The targeted creature must make a DC 13 Charisma saving throw. On a failed save, the target has disadvantage on attack rolls for 1 minute. The target
Dexterity saving throw. On a failed save, the target’s speed is halved for 1 minute. In addition, the creature can’t take reactions, and it can take either an action or a bonus action on its
Monsters
Mordenkainen Presents: Monsters of the Multiverse
, taking 35 (10d6);{"diceNotation":"10d6","rollType":"damage","rollAction":"Acid Breath","rollDamageType":"acid"} acid damage on a failed save, or half as much damage on a successful one.
Spellcasting
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
Monsters
Fizban's Treasury of Dragons
, taking 28 (8d6);{"diceNotation":"8d6", "rollType":"damage", "rollAction":"Acid Belch", "rollDamageType":"acid"} acid damage on a failed save, or half as much damage on a successful one.A dragonflesh
abomination is the final stage of a grafter’s transformation—a hulking monster whose corrupted brain is ablaze with desire for treasure. Its abhorrent transformation erases the last
Monsters
Mordenkainen Presents: Monsters of the Multiverse
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
appears, or that enters it later, must make a DC 19 Constitution saving throw. On a successful save, the creature can’t be infected by these spores for 24 hours. On a failed save, the creature is
Backgrounds
Guildmasters’ Guide to Ravnica
and twisted remains of a failed experiment, a hammer, a block and tackle, a set of common clothes, and a belt pouch containing 5 gp (Azorius 1-zino coins)
Feature: Urban Infrastructure
The popular
pursuits, and others just like explosions.
Personality Traits
d8
Personality Trait
1
I have a hard time staying focused on … oh, and my brain tends to jump from one &hellip
Compendium
- Sources->Dungeons & Dragons->Van Richten’s Guide to Ravenloft
The God-Brain The scope of what mind flayers call history exists on a cosmic scale. Through ages of empire and conflict, the illithid elder brains indulged experiments without comparison or reference
for lesser beings, explorations beyond the boundaries of time, reality, immortality, and the multiverse. Many failed—at least one catastrophically so. To summarize an eon of atrocities, one elder
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
Compendium
- Sources->Dungeons & Dragons->Monsters of the Multiverse
Elder Brain The ultimate expression of mind flayer domination, an elder brain sprawls within a vat of viscous brine, cared for by mind flayer minions as it touches the thoughts of creatures near and
far. It scrawls upon the canvas of the creatures’ minds, rewriting their thoughts and authoring their dreams. An elder brain sustains itself by consuming the brains of other creatures. If its mind
Compendium
- Sources->Dungeons & Dragons->Volo's Guide to Monsters
underground, and within easy reach of humanoids and their succulent brains. No two lairs are the same, as the resident elder brain drives the form and function of each one. The lair shown in the
difficult as possible for ordinary two-legged creatures. In such locations, thralls must climb or use ropes to move from place to place. Brain Chamber Mind flayers sometimes preserve extracted brains in a
Compendium
- Sources->Dungeons & Dragons->Lost Laboratory of Kwalish
which skill has the best chance to convince a brain to keep its disks active. If that check is subsequently failed, both of that specific brain’s disks are deactivated. If brain number 2 or any three
— and what appears to be a humanoid brain.
Any wires spotted by the characters in area M2 all eventually end up here. An inspection of the room and its control panels show that most of the magical
Compendium
- Sources->Dungeons & Dragons->Volo's Guide to Monsters
creature must make a Wisdom saving throw, taking 10 (3d6) psychic damage on a failed save, or half as much damage on a successful one. The save DC is 10 + the number of meenlocks participating in the
no eternal communion with an elder brain is possible. The road to lichdom offers a way to escape the permanency of death, but that path is long and solitary. Alhoons are mind flayers that use a
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
Compendium
- Sources->Dungeons & Dragons->Lost Laboratory of Kwalish
failed check, the brain is destroyed and any floating disks it controls in the treasury (area M10) are permanently deactivated. The characters might also attempt to craft an entirely new mechanical body
New Body Problem. Every brain in a jar is desperate for a new body, and a brain immediately agrees to aid the characters any way it can if they promise to restore it to life. Any number of possible
Compendium
- Sources->Dungeons & Dragons->Phandelver and Below: The Shattered Obelisk
clashing of cymbals. This pulse deals no damage, but all creatures other than mind flayers find it unpleasant. No one else within Illithinoch can hear this mental pulse except for the infected elder brain
clear. Incapacitated Characters The infected elder brain at Illithinoch’s center (area X15) remains aware of the characters moving throughout the stronghold due to its Creature Sense ability. If a
Compendium
- Sources->Dungeons & Dragons->Monster Manual (2014)
creation and either doesn’t perceive the slaadi as threats or chooses to ignore them. Embedded in a slaad’s brain is a magic gem. Acquire it, and the slaad is yours to command.
VARIANT
: SLAAD CONTROL GEMS
As a slaad emerges from the Spawning Stone, the stone magically implants a fragment of itself in the slaad’s brain. This fragment takes the form of a magic gem roughly the size and
Compendium
- Sources->Dungeons & Dragons->Phandelver and Below: The Shattered Obelisk
Mindblasting Cap Wondrous Item, Very Rare (Requires Attunement) 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
Compendium
- Sources->Dungeons & Dragons->Phandelver and Below: The Shattered Obelisk
realm’s starless depths and been subsequently rewarded with extraordinary powers. Instead of heeding an elder brain, a mind flayer clairvoyant listens to the whispers and whims of the voices of the
, it has the grappled condition (escape DC 17) and must succeed on a DC 17 Intelligence saving throw or have the incapacitated condition until the grapple ends.
Extract Brain. Melee Weapon Attack: +9
Compendium
- Sources->Dungeons & Dragons->Volo's Guide to Monsters
an external assault, and the elder brain is killed. When that happens, the colony’s tadpoles are suddenly freed from their fate. They no longer serve as food, and in turn are no longer fed by their
strongest taboos in illithid society is the idea of allowing a mature tadpole to survive without implanting it into a donor brain. Under normal circumstances, any tadpole that grows larger than a few
Compendium
- Sources->Dungeons & Dragons->Phandelver and Below: The Shattered Obelisk
The Nematode The Nematode is unique among the floating nodules; it is an animate if lethargic creature, akin to a brain parasite on a massive scale, rather than an inert nodule. It is mostly inert
the mouth shuts must make a DC 20 Dexterity saving throw. A creature is pushed 5 feet closer to the throat on a failed save. A creature caught between the teeth that succeeds on this saving throw can
Compendium
- Sources->Dungeons & Dragons->Monsters of the Multiverse
assault, and the elder brain (appears in this book) 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
without being implanted in a brain so they can’t become such threats. Neothelids are not intelligent enough for elder brains to detect, so mind flayers are always alert for signs of their presence
Compendium
- Sources->Dungeons & Dragons->Volo's Guide to Monsters
Mindwitness If the beholder can be stunned and brought safely to the brine pool of the elder brain, it can be converted through ceremorphosis into a mindwitness. The process of ceremorphosis
, mindwitnesses are psionically imprinted with devotion to the elder brain and submission to illithid commands, making them almost as obedient as intellect devourers. Telepathic Hub. The primary
Compendium
- Sources->Dungeons & Dragons->Monsters of the Multiverse
Mindwitness If a beholder is stunned and brought to the brine pool of an elder brain (appears in this book), the beholder can be converted into a mindwitness. This alters some of its eye rays and
transforms four of its eyestalks into tentacles similar to a mind flayer’s. The mindwitness is psychically imprinted with devotion to the elder brain and submission to illithid commands. A mindwitness’s
Compendium
- Sources->Dungeons & Dragons->Fizban's Treasury of Dragons
Dragonflesh Abomination A dragonflesh abomination is the final stage of a grafter’s transformation—a hulking monster whose corrupted brain is ablaze with desire for treasure. Its abhorrent
–6). The abomination belches forth a cloud of acidic gas in a 30-foot cone. Each creature in that area must make a DC 14 Constitution saving throw, taking 28 (8d6) acid damage on a failed save, or half as much damage on a successful one.
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
must make a DC 15 Strength saving throw. On a failed save, the creature is swept 60 feet downriver; on a successful save, the distance is halved to 30 feet. The river flows just as strongly through
the door.
Illithids. Two mind flayers are present. One stands behind the grimlock, feasting on its brain while telepathically communicating the experience to the second mind flayer, which looks on






