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Elder Brain
Legacy
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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
the saving throw at the end of each of its turns, ending the effect on itself on a success.
Psychic Link. The elder brain targets one incapacitated creature it can perceive with its Creature Sense
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
of another creature’s turn. The elder brain regains spent legendary actions at the start of its turn.
Break Concentration. The elder brain targets one creature within 120 feet of it with which
Monsters
Icewind Dale: Rime of the Frostmaiden
Detect Sentience. The brain 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 creature
","rollAction":"Mind Blast"}. The brain magically emits psychic energy in a 60-foot cone. Each creature in that area must succeed on a DC 14 Intelligence saving throw or take 17 (3d8 + 4);{"diceNotation":"3d8
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
Link. The brain breaker targets one creature with the incapacitated condition that the brain breaker senses with its Creature Sense trait and establishes a psychic link with the target. Until the link
Monsters
Infernal Machine Rebuild
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
creature is protected by a mind blank spell.
Magic Resistance. The brain in a jar has advantage on saving throws against spells and other magical effects.
Innate Spellcasting (Psionics). The brain in
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
the elder brain that fuels Illithinoch’s mind flayers.Psychic Link. The elder brain targets one creature with the incapacitated condition that the elder brain senses with its Creature Sense trait
Monsters
Fizban's Treasury of Dragons
Attack: +15;{"diceNotation":"1d20+15","rollType":"to hit","rollAction":"Tentacle"} to hit, reach 15 ft., one creature. Hit: 12 (1d8 + 8);{"diceNotation":"1d8+8","rollType":"damage","rollAction":"Tentacle
(Recharge 5–6);{"diceNotation":"1d6","rollType":"recharge","rollAction":"Tadpole Brine Breath"}. The dragon exhales brine in a 120-foot line that is 15 feet wide. Each creature in that area must make a DC 22
Monsters
Lost Laboratory of Kwalish
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
creature is protected by a mind blank spell.
Magic Resistance. The brain in a jar has advantage on saving throws against spells and other magical effects.
Innate Spellcasting (Psionics). The brain in
Compendium
- Sources->Dungeons & Dragons->Monsters of the Multiverse
Bonus +5
Creature Sense. The elder brain is aware 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 well as each
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
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->Van Richten’s Guide to Ravenloft
Roleplaying the God-Brain The God-Brain’s influence drives the mind flayers beyond their domain to purse all manner of subtle observations, bizarre experiments, repeat abductions, and visceral mutilations.
Compendium
- Sources->Dungeons & Dragons->Van Richten’s Guide to Ravenloft
Languages the languages it knew in life
Challenge 3 (700 XP) Proficiency Bonus +2
Detect Sentience. The brain 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 creature is protected by a mind blank spell.
Magic Resistance. The brain has advantage on saving throws against spells and other
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
brain’s reality-bending research had an unexpected result, revealing to it a malignant truth for which existence was unprepared. Guided by this burgeoning revelation, the elder brain turned and preyed
Compendium
- Sources->Dungeons & Dragons->Icewind Dale: Rime of the Frostmaiden
disadvantage on attack rolls against the brain until the end of the brain’s next turn.
Mind Blast (Recharge 5–6). The brain magically emits psychic energy in a 60-foot cone. Each creature in that area
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
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
)
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
Compendium
- Sources->Dungeons & Dragons->Volo's Guide to Monsters
The Elder Brain Mind flayers use telepathy to communicate with each other and with other creatures. Among their own kind, they form a network of minds. Each mind flayer is an individual node of the
network, taking on specific tasks, sharing information, and so on. At the center of this network is the elder brain. The elder brain is the most powerful member of a mind flayer colony. Just as mind
Compendium
- Sources->Dungeons & Dragons->The Book of Many Things
21: Brain Chamber The door to this chamber is red. A strange, silver machine rests between a pair of metal chairs in the center of this room. Shelves lining the walls hold potion bottles and glass
instantly switch bodies (an unwilling creature can make a DC 18 Wisdom saving throw, causing the machine to fail on a successful saving throw). Each creature retains its personality and memories but
Compendium
- Sources->Dungeons & Dragons->Van Richten’s Guide to Ravenloft
The Chamber of the God-Brain The Chamber of the God-Brain rests miles below Citadel Subterrene. The cathedral-like chamber is roughly ovoid in shape, with walls of gleaming, organic metal. The
massive God-Brain trembles in a pool of medicinal brine and experimental chemicals capable of dissolving most other creatures. The massive, alien brain’s affliction is clear from the leaking holes pocking
Monsters
Monster Manual
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
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
Monsters
Monster Manual
Detect Intelligence. The intellect devourer magically senses the location of any creature within 300 feet of itself that has an Intelligence score of 3 or higher, regardless of interposing
(2d4 + 2);{"diceNotation":"2d4+2", "rollType":"damage", "rollAction":"Claw", "rollDamageType":"Slashing"} Slashing damage.
Devour Intellect. Intelligence Saving Throw: DC 12, one creature the
Monsters
Monster Manual
liquid large enough to support the target. If this damage reduces the target to 0 Hit Points, the mind flayer kills it and magically devours its brain.
Mind Burst (Recharge 5–6);{"diceNotation":"1d6
", "rollType":"recharge", "rollAction":"Mind Burst"}. Intelligence Saving Throw: DC 17, each creature in a 40-foot Emanation originating from the mind flayer. Failure: 41 (8d8 + 5);{"diceNotation":"8d8
Spells
Player’s Handbook
chosen type before the spell ends, the creature reduces the total damage taken by 1d4. A creature can benefit from this spell only once per turn.
You touch a willing creature and choose a damage type: Acid, Bludgeoning, Cold, Fire, Lightning, Necrotic, Piercing, Poison, Radiant, Slashing, or Thunder. When the creature takes damage of the
Spells
Player’s Handbook
You launch a green ray at a target you can see within range. The target can be a creature, a nonmagical object, or a creation of magical force, such as the wall created by Wall of Force.
A creature
targeted by this spell makes a Dexterity saving throw. On a failed save, the target takes 10d6 + 40 Force damage. If this damage reduces it to 0 Hit Points, it and everything nonmagical it is wearing
Monsters
Monster Manual
Saving Throw: DC 11, one creature directly underneath the piercer. Failure: 10 (3d6);{"diceNotation":"3d6", "rollType":"damage", "rollAction":"Drop. The piercer falls", "rollDamageType":"Piercing"} Piercing damage. Failure or Success: The piercer reduces any damage it takes from the fall by 20.
Monsters
Monster Manual
", "rollDamageType":"Force"} Force damage. If the target is a nonmagical object or a creation of magical force, a 10-foot Cube of it disintegrates into dust. Success: Half damage. Failure or Success: If the target is a creature and this damage reduces it to 0 Hit Points, it disintegrates into dust.
Poison
Undead Fortitude. If damage reduces the zombie to 0 Hit Points, it makes a Constitution saving throw (DC 5 plus the damage taken) unless the damage is Radiant or from a Critical Hit. On a successful
Monsters
Monster Manual
, without needing to make an ability check.
Web Walker. The spider ignores movement restrictions caused by webs, and the spider knows the location of any other creature in contact with the same
. If this damage reduces the target to 0 Hit Points, the target becomes Stable, and it has the Poisoned condition for 1 hour. While Poisoned, the target also has the Paralyzed condition.Ethereal Jaunt. The spider teleports from the Material Plane to the Ethereal Plane or vice versa.
Magic Items
Dungeon Master’s Guide
expanse filled with thick fog that reduces visibility to 10 feet. Creatures trapped in the mirror’s cells don’t age, and they don’t need to eat, drink, or sleep. A creature trapped
Magic action and use a command word to activate it. It remains activated until you take a Magic action and repeat the command word to deactivate it.
Any creature other than you that sees its
Spells
Player’s Handbook
For the duration, the spell enlarges or reduces a creature or an object you can see within range (see the chosen effect below). A targeted object must be neither worn nor carried. If the target is an
unwilling creature, it can make a Constitution saving throw. On a successful save, the spell has no effect.
Everything that a targeted creature is wearing and carrying changes size with it. Any item
Magic Items
Dungeon Master’s Guide
The definitive treatise on all that is good in the multiverse, the Book of Exalted Deeds figures prominently in many religions. Rather than being a scripture devoted to a particular faith, the book
magical nature or translate the benefits it offers to those pure of heart and firm of purpose.
A heavy clasp, wrought to look like angel wings, keeps the book’s contents secure. Only a creature
Monsters
Monster Manual
creature with the object. Failure: The object takes a −1 penalty to the AC it offers (armor) or to its attack rolls (weapon). Armor is destroyed if the penalty reduces its AC to 10, and a weapon
"} Piercing damage.
Antennae. The rust monster targets one nonmagical metal object—armor or a weapon—worn or carried by a creature within 5 feet of itself. Dexterity Saving Throw: DC 11, the
Monsters
Monster Manual
"} Bludgeoning damage. If the target is a Large or smaller creature, it has the Prone condition.Deflect Missile (Recharge 5–6);{"diceNotation":"1d6", "rollType":"recharge", "rollAction":"Deflect Missile
"}. Trigger: The giant is hit by a ranged attack roll and takes Bludgeoning, Piercing, or Slashing damage from it. Response: The giant reduces the damage it takes from the attack by 11 (1d10 + 6
Monsters
Monster Manual
Amorphous. The pudding can move through a space as narrow as 1 inch without expending extra movement to do so.
Corrosive Form. A creature that hits the pudding with a melee attack roll takes 4 (1d8
by the target takes a −1 penalty to the AC it offers. The armor is destroyed if the penalty reduces its AC to 10. The penalty can be removed by casting the Mending spell on the armor.Split
Monsters
Monster Manual
: Half damage. Failure or Success: If the target is a creature and this damage reduces it to 0 Hit Points, it disintegrates into dust.
Death Ray. Dexterity Saving Throw: DC 17. Failure: 55 (10d10
). Failure: The target has the Unconscious condition for 1 minute. The condition ends if the target takes damage or a creature within 5 feet of it takes an action to wake it.
Petrification Ray
Magic Items
Dungeon Master’s Guide
attack rolls and damage rolls made with this magic weapon. If you hit an Undead with this weapon, you take 1d10 Necrotic damage, and the target regains 1d10 Hit Points. If this Necrotic damage reduces you
with a range of 30 feet.
Devour Soul. Whenever you use Blackrazor to reduce a creature to 0 Hit Points, the sword slays the creature and devours its soul unless it is a Construct or an Undead. A
Monsters
Monster Manual
or Success: If the target is a creature and this damage reduces it to 0 Hit Points, it disintegrates into dust. 10: Death Ray. Dexterity Saving Throw: DC 16. Failure: 55 (10d10);{"diceNotation":"10d10
Unconscious condition for 1 minute. The condition ends if the target takes damage or a creature within 5 feet of it takes an action to wake it. 8: Petrification Ray. Constitution Saving Throw: DC 16