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Elder Brain
Legacy
This doesn't reflect the latest rules and lore.
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Monsters
Volo's Guide to Monsters
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
:
At will: detect thoughts, levitate
1/day each: dominate monster, plane shift (self only)
Legendary Resistance (3/Day). If the elder brain fails a saving throw, it can choose to succeed instead
Monsters
Mordenkainen Presents: Monsters of the Multiverse
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
and other magical effects.
Telepathic Hub. The elder brain can use its telepathy to initiate and maintain telepathic conversations with up to ten creatures at a time. The elder brain can let those
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
":"3d8","rollType":"damage","rollAction":"Chill Touch","rollDamageType":"necrotic"} necrotic damage, and the target can’t regain hit points until the start of the brain’s next turn. If the
Monsters
Phandelver and Below: The Shattered Obelisk
.
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
telepathic conversations with up to ten creatures at a time. The brain breaker can let those creatures telepathically hear each other while connected in this way.Multiattack. The brain breaker makes two
Monsters
Phandelver and Below: The Shattered Obelisk
.
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
conversations with up to ten creatures at a time. The elder brain can let those creatures telepathically hear each other while connected in this way.Multiattack. The elder brain makes two Tentacle
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
Fizban's Treasury of Dragons
tentacles into the dragon’s brain. An elder brain dragon is the nightmarish result.
Using the mobility of the dragon’s body, the elder brain can now serve as a powerful general to illithid
. Even the elder brain dragon’s breath weapon mutates during its transformation, becoming a stream of briny liquid roiling with illithid tadpoles. These tadpoles can swiftly slay victims and transform them into mind flayers, allowing the elder brain dragon to grow its own roving colony.Psychic
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
flayer servants don’t bring meals directly to it, the elder brain reaches out with tendrils of thought, compelling creatures to come to it so that it can feed on them. When a mind flayer perishes, the
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 and other magical effects
Compendium
- Sources->Dungeons & Dragons->Fizban's Treasury of Dragons
onto the dragon’s back and digs its tentacles into the dragon’s brain. An elder brain dragon is the nightmarish result. Using the mobility of the dragon’s body, the elder brain can now serve as a
pulsing with psionic power. Even the elder brain dragon’s breath weapon mutates during its transformation, becoming a stream of briny liquid roiling with illithid tadpoles. These tadpoles can swiftly slay
Compendium
- Sources->Dungeons & Dragons->Van Richten’s Guide to Ravenloft
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
others with whom it can speak. It also likes to think out loud and reflect on the events and decisions that led to its great transformation. Brain Vessels The brain floats in a jar of solution
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->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->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->Icewind Dale: Rime of the Frostmaiden
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
. A brain in a jar can speak without vocal cords, psionically projecting its disembodied voice outward for all to hear. It enjoys conversation so much that it is prone to talking for hours on end
Compendium
- Sources->Dungeons & Dragons->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
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
Compendium
- Sources->Dungeons & Dragons->Volo's Guide to Monsters
elder brain. Although such missions risk attracting unwanted attention, they can yield a treasure trove of knowledge and insights to be shared throughout the entire colony when a roaming mind flayer
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
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
can voluntarily leave the body, teleporting to the nearest unoccupied space within 5 feet of it. The body then dies unless its brain is restored before the end of the intellect devourer’s next turn.Psychic
intellect devourer can see within 5 feet. Failure: 11 (2d10);{"diceNotation":"2d10", "rollType":"damage", "rollAction":"Devour Intellect", "rollDamageType":"Psychic"} Psychic damage, and the target has the
Monsters
Monster Manual
", "rollAction":"Arcane Tentacles", "rollDamageType":"Psychic"} Psychic damage, and the mind flayer can teleport the target up to 30 feet to an unoccupied space the mind flayer can see on a surface or
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
Spells
Player’s Handbook
, objects and affected creatures shed Dim Light in a 10-foot radius and can’t benefit from the Invisible condition.
Attack rolls against an affected creature or object have Advantage if the attacker can see it.
Spells
Player’s Handbook
A Club or Quarterstaff you are holding is imbued with nature’s power. For the duration, you can use your spellcasting ability instead of Strength for the attack and damage rolls of melee
attacks using that weapon, and the weapon’s damage die becomes a d8. If the attack deals damage, it can be Force damage or the weapon’s normal damage type (your choice).
The spell ends early if
Feats
Player’s Handbook
Fighting Style Feat (Prerequisite: Fighting Style Feature)
When a creature you can see attacks a target other than you that is within 5 feet of you, you can take a Reaction to interpose your Shield
if you’re holding one. You impose Disadvantage on the triggering attack roll and all other attack rolls against the target until the start of your next turn if you remain within 5 feet of the target.
Spells
Player’s Handbook
Disadvantage on Dexterity saving throws and attack rolls, and other creatures have Advantage on attack rolls against it. On each of its turns, the target can take an action to collect itself and repeat the save, ending the spell on itself on a success.
One creature that you can see within range must make a Wisdom saving throw. On a successful save, the target dances comically until the end of its next turn, during which it must spend all its
Equipment
As a Utilize action, you can use Manacles to bind an unwilling Small or Medium creature within 5 feet of yourself that has the Grappled, Incapacitated, or Restrained condition if you succeed on a DC
13 Dexterity (Sleight of Hand) check. While bound, a creature has Disadvantage on attack rolls, and the creature is Restrained if the Manacles are attached to a chain or hook that is fixed in place
Spells
Player’s Handbook
You try to compel a creature into a duel. One creature that you can see within range makes a Wisdom saving throw. On a failed save, the target has Disadvantage on attack rolls against creatures other
than you, and it can’t willingly move to a space that is more than 30 feet away from you.
The spell ends if you make an attack roll against a creature other than the target, if you cast a
Spells
Player’s Handbook
The target hit by the strike takes an extra 2d6 Radiant damage from the attack. Until the spell ends, the target sheds Bright Light in a 5-foot radius, attack rolls against it have Advantage, and it
can’t benefit from the Invisible condition.
Using a Higher-Level Spell Slot. The damage increases by 1d6 for each spell slot level above 2.
Spells
Player’s Handbook
Guided by a flash of magical insight, you make one attack with the weapon used in the spell’s casting. The attack uses your spellcasting ability for the attack and damage rolls instead of using
Strength or Dexterity. If the attack deals damage, it can be Radiant damage or the weapon’s normal damage type (your choice).
Cantrip Upgrade. Whether you deal Radiant damage or the weapon
Magic Items
Dungeon Master’s Guide
Whenever you roll this six-sided die, you can control which number it rolls.
Spells
Player’s Handbook
. Creatures of those types have Disadvantage on attack rolls against the target. The target also can’t be possession;possessed by or gain the Charmed or Frightened conditions from them. If the target
Magic Items
Dungeon Master’s Guide
You gain a +3 bonus to attack rolls and damage rolls made with this magic weapon.
The first time you attack with the weapon on each of your turns, you can transfer some or all of the weapon’s
bonus to your Armor Class. For example, you could reduce the bonus to your attack rolls and damage rolls to +1 and gain a +2 bonus to Armor Class. The adjusted bonuses remain in effect until the start of your next turn, although you must hold the weapon to gain a bonus to AC from it.
Magic Items
Dungeon Master’s Guide
You gain a +3 bonus to attack rolls and damage rolls made with this sword. In addition, while you hold the sword, you can take a Reaction to make one melee attack with it against any creature in your
Spells
Player’s Handbook
For the duration, Celestials, Elementals, Fey, Fiends, and Undead have Disadvantage on attack rolls against you. You can end the spell early by using either of the following special functions.
Break
, Charmed, or Frightened by such creatures.
Dismissal. As a Magic action, you target one creature you can see within 5 feet of you that has one of the creature types above. The target must succeed on a
Monsters
Monster Manual
4–6);{"diceNotation":"1d6", "rollType":"recharge", "rollAction":"Portent"}. Trigger: The cyclops or an ally it can see makes a D20 Test. Response: The cyclops rolls 1d20;{"diceNotation":"1d20
of Light", "rollDamageType":"Radiant"} Radiant damage, and the target has Disadvantage on attack rolls until the end of the cyclops’s next turn.
Spellcasting. The cyclops casts one of the






