bonus brain diffusing causing reduced

Erinyes

Monsters Monster Manual

Entangling Rope action. The rope has AC 20, HP 90, and Immunity to Poison and Psychic damage. The rope turns to dust if reduced to 0 Hit Points, if it is 5+ feet away from the erinyes for 1 hour or more

":"damage", "rollAction":"Entangling Rope", "rollDamageType":"Force"} Force damage, and the target has the Restrained condition until the rope is destroyed, the erinyes uses a Bonus Action to release

Staff of the Python

Magic Items Dungeon Master’s Guide

As a Magic action, you can throw this staff so that it lands in an unoccupied space within 10 feet of you, causing the staff to become a Giant Constrictor Snake in that space. The snake is under your

location. Absent commands from you, the snake defends itself. As a Bonus Action, you can command the snake to revert to staff form in its current space, and you can’t use the staff's property again

Defensive Duelist

Feats Player’s Handbook

a Finesse weapon and another creature hits you with a melee attack, you can take a Reaction to add your Proficiency Bonus to your Armor Class, potentially causing the attack to miss you. You gain this bonus to your AC against melee attacks until the start of your next turn.

Shield Guardian

Monsters Monster Manual

the guardian. Response: The wearer gains a +5 bonus to AC, including against the triggering attack and possibly causing it to miss, until the start of the guardian’s next turn.Poison

Rope of Entanglement

Magic Items Dungeon Master’s Guide

’s space) or by using a Bonus Action to repeat the command (causing the rope to coil up in your hand). A target Restrained by the rope can take an action to make its choice of a DC 15 Strength

. The target must succeed on a DC 15 Dexterity saving throw or have the Restrained condition. You can release the target by letting go of your end of the rope (causing the rope to coil up in the target

Mummy Lord

Monsters Monster Manual

maximum decreases by 10 (3d6);{"diceNotation":"3d6", "rollType":"roll", "rollAction":"Rotting Fist"} every 24 hours that elapse. A creature dies and turns to dust if reduced to 0 Hit Points by this attack

Sand. Trigger: The mummy is hit by an attack roll. Response: The mummy adds 2 to its AC against the attack, possibly causing the attack to miss, and the mummy teleports up to 60 feet to an unoccupied

Animate Objects

Spells Player’s Handbook

. Each target animates, sprouts legs, and becomes a Construct that uses the Animated Object stat block; this creature is under your control until the spell ends or until it is reduced to 0 Hit Points

Bonus Action to mentally command any creature you made with this spell if the creature is within 500 feet of you (if you control multiple creatures, you can command any of them at the same time, issuing

Heavy Armor Master

Feats Player’s Handbook

Reduction. When you’re hit by an attack while you’re wearing Heavy armor, any Bludgeoning, Piercing, and Slashing damage dealt to you by that attack is reduced by an amount equal to your Proficiency Bonus.

Quarterstaff of the Acrobat

Magic Items Dungeon Master’s Guide

an attack while holding the weapon, you can take a Reaction to twirl the weapon around you, gaining a +5 bonus to your Armor Class against the triggering attack, potentially causing the attack to miss

You have a +2 bonus to attack rolls and damage rolls made with this magic weapon. While holding this weapon, you can cause it to emit green Dim Light out to 10 feet, either as a Bonus Action or

Giant Insect

Spells Player’s Handbook

ft. Hit: 1d10 + 3 plus the spell’s level Bludgeoning damage, and the target’s Speed is reduced to 0 until the start of the insect’s next turn. Bonus Actions Venomous Spew (Centipede

Languages Understands the languages you know CR None (XP 0; PB equals your Proficiency Bonus) Traits Spider Climb. The insect can climb difficult surfaces, including along ceilings, without needing to

Gibbering Mouther

Monsters Monster Manual

", "rollAction":"Gibbering"} to determine what it does during the current turn: 1–4. The target does nothing. 5–6. The target takes no action or Bonus Action and uses all its movement to move in a

. If the target is a Medium or smaller creature, it has the Prone condition. The target dies if it is reduced to 0 Hit Points by this attack. Its body is then absorbed into the mouther, leaving only

Baba Yaga's Dancing Broom

Magic Items Dungeon Master’s Guide

. The broom then moves into an unoccupied space as close to you as possible. The broom acts immediately after you on your Initiative count and remains animate until you take a Bonus Action and use a

). You decide what action the broom takes and where it moves during its next turn, or you can issue it a general command, such as to attack your enemies or guard a location. If the broom is reduced to 0

Bag of Tricks

Magic Items Dungeon Master’s Guide

creature’s stat block. The creature vanishes at the next dawn or when it is reduced to 0 Hit Points. The creature is Friendly to you and your allies, and it acts immediately after you on your

Initiative count. You can take a Bonus Action to command how the creature moves and what action it takes on its next turn, such as attacking an enemy. In the absence of such orders, the creature acts

Boon of Recovery

Feats Player’s Handbook

reduced to 0 Hit Points, you can drop to 1 Hit Point instead and regain a number of Hit Points equal to half your Hit Point maximum. Once you use this benefit, you can’t use it again until you

finish a Long Rest. Recover Vitality. You have a pool of ten d10s. As a Bonus Action, you can expend dice from the pool, roll those dice, and regain a number of Hit Points equal to the roll’s total. You regain all the expended dice when you finish a Long Rest.

Book of Exalted Deeds

Magic Items Dungeon Master’s Guide

that tries to read from the book takes 24d6 Radiant damage. This damage ignores Resistance and Immunity, and it can’t be reduced or avoided by any means. A creature reduced to 0 Hit Points by

a 10-foot radius and Dim Light for an additional 10 feet. You can dismiss or manifest the halo as a Bonus Action. While present, the halo gives you Advantage on Charisma (Persuasion) checks. In

Sphere of Annihilation

Magic Items Dungeon Master’s Guide

Bonus Action to cause it to move in one direction of your choice, up to a number of feet equal to 5 times your Intelligence modifier (minimum 5 feet). Any creature whose space the sphere enters must

succeed on a DC 19 Dexterity saving throw or be touched by it, taking 8d10 Force damage. A creature reduced to 0 Hit Points by this damage is obliterated, leaving its possessions behind but no other

Blackrazor

Magic Items Dungeon Master’s Guide

Hidden in the dungeon of White Plume Mountain, Blackrazor shines like a piece of night sky filled with stars. Its black scabbard is decorated with pieces of cut obsidian. You gain a +3 bonus to

Blackrazor. Blackrazor can be destroyed by crushing it in the great gears of Mechanus. Primus, the creator of the modrons, also knows a series of musical tones that Blackrazor can’t stand to hear, causing the sword to shatter.

Moonblade

Magic Items Dungeon Master’s Guide

rejects you but also places a curse on you, causing you to make D20 Test;D20 Tests with Disadvantage for 24 hours or until the curse is ended by a Remove Curse spell or similar magic. If you’re

+1 bonus to attack rolls and damage rolls made with this magic weapon. Each rune beyond the first grants the Moonblade an additional property. The DM chooses each property or determines it randomly by

Dreaming Dark Mindkiller

Monsters Eberron: Forge of the Artificer

following on each of its turns: move, take an action, or take a Bonus Action. Success: Half damage only.Mindkillers are the assassins of the Dreaming Dark, sent to terrify their foes before striking

to kill. Mindkillers force foes to attack their own allies, causing physical and emotional devastation to grow the power of the Dreaming Dark.PsychicSlayer’s Puppet (1/Day). The mindkiller

Boon of Bloodshed

Feats Forgotten Realms: Heroes of Faerûn

enemy you can see is reduced to 0 Hit Points, you gain Advantage on the next attack roll you make before the end of your next turn. Power from Pain. Once per turn, when you make an attack roll while

Bloodied, you can deal extra damage to the target equal to your Proficiency Bonus. The extra damage's type is the same as the attack's type.

Tharashk Hunter

Monsters Eberron: Forge of the Artificer

);{"diceNotation":"3d8+4", "rollType":"damage", "rollAction":"Longbow", "rollDamageType":"Piercing"} Piercing damage, and the target’s Speed is reduced by 10 feet until the end of its next turn.Uncanny

marks one creature it can see within 150 feet. The mark lasts for 1 hour, until the target dies, or until the hunter uses this Bonus Action again. While the target is marked in this way, the hunter has

Greater Mark of Hospitality

Feats Eberron: Forge of the Artificer

spell so that instead of its normal effect, each creature of your choice within 30 feet of you is refreshed. Each affected creature’s Exhaustion level is reduced by 1, and the creature gains

Temporary Hit Points equal to your Proficiency Bonus plus your Intelligence, Wisdom, or Charisma modifier (choose when you select this feat). Once you modify the spell with this benefit, you can’t do so again until you finish a Long Rest.

Elder Brain

Monsters Mordenkainen Presents: Monsters of the Multiverse

Link. The elder brain targets one creature within 120 feet of it with which it has a psychic link. The elder brain ends the link, causing the creature to have disadvantage on all ability checks

reduced to 0, and it can’t teleport. It can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. Psychic Inspiration. The elder brain targets one

Elder Brain Legacy

Monsters Volo's Guide to Monsters

":"psychic"} psychic damage. Sever Psychic Link. The elder brain targets a creature within 120 feet of it with which it has a psychic link. The elder brain ends the link, causing the creature to have

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

Mind Flayer Clairvoyant

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

Ulitharid

Monsters Mordenkainen Presents: Monsters of the Multiverse

are then planted in the ulitharid’s corpse, causing it to dissolve into ichor. This psionically potent slime helps to fuel the transformation of the area into a brine pool for the embryonic elder brain.

in this manner. Magic Resistance. The ulitharid has advantage on saving throws against spells and other magical effects. Psionic Hub. If an elder brain establishes a psychic link with the ulitharid

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

phage. While infected, the target can't regain hit points, and its hit point maximum is reduced by 10 (3d6);{"diceNotation":"3d6","rollType":"roll","rollAction":"Claw"} every 24 hours. If the disease

Intellect Devourer Legacy

Monsters Monster Manual (2014)

damage. Devour Intellect. The intellect devourer targets one creature it can see within 10 feet of it that has a brain. The target must succeed on a DC 12 Intelligence saving throw against this magic or

","rollAction":"Devour Intellect"}: If the total equals or exceeds the target’s Intelligence score, that score is reduced to 0. The target is stunned until it regains at least one point of

Cranium Rat Legacy

Monsters Volo's Guide to Monsters

Illumination. As a bonus action, the cranium rat can shed dim light from its brain in a 5-foot radius or extinguish the light. Telepathic Shroud. The cranium rat is immune to any effect that would

Refraction of Ilvaash

Monsters Phandelver and Below: The Shattered Obelisk

. The refraction targets a creature within 120 feet of itself and disrupts its mental processes, causing the target to have disadvantage on all ability checks, attack rolls, and saving throws until the

-Brain. When Ilsensine left the Far Realm to establish a divine domain elsewhere, pieces of the God-Brain sloughed away and awoke to sentience. This is Ilvaash, the Dissonant Psyche. The refraction of

Dyrrn

Monsters Eberron: Rising from the Last War

damage, this trait doesn’t function at the start of its next turn. Dyrrn dies only if it starts its turn with 0 hit points and doesn’t regenerate. Teleport. As a bonus action, Dyrrn can

teleport up to 30 feet to an unoccupied space it can see.Multiattack. Dyrrn makes one Tentacle Whip attack and uses its Corruption once. Dyrrn can replace its Tentacle Whip attack with Extract Brain if it

Defensive Duelist Legacy

Feats Player’s Handbook (2014)

When you are wielding a finesse weapon with which you are proficient and another creature hits you with a melee attack, you can use your reaction to add your proficiency bonus to your AC for that attack, potentially causing the attack to miss you.

Elder Brain Dragon

Monsters Fizban's Treasury of Dragons

tadpoles infesting the creature are killed instantly, ending the effect on the creature. If a Humanoid is reduced to 0 hit points while infested, the creature is stable but remains unconscious for 6d12

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

Sanctum Amulet

Magic Items Bigby Presents: Glory of the Giants

. Additionally, you can cast the spare the dying cantrip using either an action or a bonus action. Invoking the Rune. When a creature you can see within 60 feet of you is reduced to 0 hit points as a result of

taking damage, you can use your reaction to invoke the item’s rune, causing the pendant to flash with pale light. The creature then instead drops to 1 hit point. Once the rune has been invoked, it can’t be invoked again until the next dawn.

Stone Defender Legacy

Monsters Mordenkainen’s Tome of Foes

. In response to another creature within 5 feet of it being hit by an attack roll, the stone defender gives that creature a +5 bonus to its AC against that attack, potentially causing a miss. To use this

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