containing respectively grow to have reduced

Dracolich

Monsters Monster Manual

it turns to dust if reduced to 0 Hit Points. If the gem is destroyed, the dracolich can create a new one by completing an 8-hour ritual using a gem worth 1,000+ GP and by expending 5,000 GP, which the

turn.Dracolich Lairs A dracolich lurks in a corrupted version of the lair it had in life. The region containing a dracolich’s lair is warped by its presence, creating the following effects: Sapping Mist

Demilich

Monsters Monster Manual

jealously guard their deathtrap-laden sanctums. The most notorious of these is the Tomb of Horrors, lair of the infamous Acererak. The region containing a demilich’s lair is twisted by its

DC 20 Constitution saving throw or have its Hit Point maximum reduced by 1d4;{"diceNotation":"1d4", "rollType":"roll", "rollAction":"Enervating Domain"}. This reduction lasts until the creature

Paper Bird

Magic Items Waterdeep: Dragon Heist

is reduced to 0 or if it is otherwise immobilized, it turns into ash. Paper birds usually come in small, flat boxes containing 1d6 + 3 sheets of the parchment.

Ogrémoch

Monsters Princes of the Apocalypse

disappear if Ogrémoch is reduced to 0 hit points.Ogrémoch can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at

creatures standing on the ground in that radius must succeed on a DC 23 Dexterity saving throw or fall prone. Create Gargoyle (Costs 3 Actions). Ogrémoch’s hit points are reduced by 50 as he

Orcus

Monsters Mordenkainen Presents: Monsters of the Multiverse

Monster Manual). These Undead obey his telepathic commands, which can reach anywhere in the lair. Regional Effects The region containing Orcus’s lair is warped by his magic, creating one or more

of the following effects: Charnel Realm. The air is filled with the stench of rotting flesh, and buzzing flies grow thick within the region. Undead Beasts. Dead Beasts periodically animate as

Zuggtmoy

Monsters Mordenkainen Presents: Monsters of the Multiverse

herself. Regional Effects The region containing Zuggtmoy’s lair is warped by her magic, creating one or more of the following effects: Corrupted Nature. Within 6 miles of the lair, all Wisdom

(Medicine) and Wisdom (Survival) checks have disadvantage. Fungal Infestation. Molds and fungi grow on surfaces within 6 miles of the lair, even where they would normally find no purchase. Mutating

Otyugh Mutate

Monsters Phandelver and Below: The Shattered Obelisk

":"roll", "rollAction":"Bite"} on a failure. On a successful save, the target is no longer poisoned. The target dies if its hit point maximum is reduced to 0. This reduction to the target’s hit

. Mutates often gain psionic abilities, grow wings, become covered in otherworldly slime, or exhibit other unsettling traits. Specific mutated creatures are further described in appendix A.Poison

Nurvureem

Monsters Princes of the Apocalypse

on a failed save, or half as much damage on a successful one. A humanoid reduced to 0 hit points by this damage dies, and an undead shadow rises from its corpse and acts immediately after the dragon

The region containing a legendary black dragon’s lair is warped by the dragon’s magic, which creates one or more of the following effects: The land within 6 miles of the lair takes

Demogorgon

Monsters Mordenkainen Presents: Monsters of the Multiverse

maximum is reduced by an amount equal to the damage taken. This reduction lasts until the target finishes a long rest. The target dies if its hit point maximum is reduced to 0. Gaze. Demogorgon turns his

hitting him with an attack), there is a 50 percent chance that the illusory duplicate is affected, not Demogorgon, in which case the illusion disappears. Regional Effects The region containing Demogorgon

Dyrrn

Monsters Eberron: Rising from the Last War

flesh twists in alien ways. The creature has disadvantage on attack rolls, its speed is reduced by half, and if it tries to cast a spell, it must first succeed on a DC 15 Intelligence check or the spell

);{"diceNotation":"4d12","rollType":"damage","rollAction":"Lair Action","rollDamageType":"psychic"} psychic damage. Unless the target has immunity to psychic damage, its Intelligence score is reduced by 1d4

Giant Foundling

Backgrounds Bigby Presents: Glory of the Giants

magic inherent in the site of your home, or some verdant blessing of growth placed on you—caused you to grow to a remarkable size for your kind. With the aid of this magic, you have learned how to

, Survival Languages: Giant and one other language of your choice Equipment: A backpack, a set of traveler’s clothes, a small stone or sprig that reminds you of home, and a pouch containing 10 gp

Zuggtmoy Legacy

Monsters Out of the Abyss

lair, instead of on herself. Regional Effects The region containing Zuggtmoy’s lair is warped by her magic, creating one or more of the following effects: Molds and fungi grow on surfaces

Orcus Legacy

Monsters Out of the Abyss

disappear or until Orcus releases their grasp (no action required). Regional Effects The region containing Orcus’s lair is warped by the Orcus’s magic, creating one or more of the following

stench of rotting flesh, and buzzing flies grow thick within the region, even when there is no carrion to be found. If a humanoid spends at least 1 hour within 1 mile of the lair, that creature must

Demogorgon Legacy

Monsters Out of the Abyss

"} bludgeoning damage. If the target is a creature, it must succeed on a DC 23 Constitution saving throw or its hit point maximum is reduced by an amount equal to the damage taken. This reduction lasts

until the target finishes a long rest. The target dies if its hit point maximum is reduced to 0. Gaze. Demogorgon turns his magical gaze toward one creature that he can see within 120 feet of him. That

Geryon

Monsters Mordenkainen Presents: Monsters of the Multiverse

long rest. The target’s hit point maximum is reduced by an amount equal to half the poison damage taken. This reduction lasts until the poisoned condition is removed. The target dies if its hit

point maximum is reduced to 0. Spellcasting. Geryon casts one of the following spells, requiring no material components and using Charisma as the spellcasting ability (spell save DC 21): At will

Geryon (Variant)

Monsters Mordenkainen Presents: Monsters of the Multiverse

long rest. The target’s hit point maximum is reduced by an amount equal to half the poison damage taken. This reduction lasts until the poisoned condition is removed. The target dies if its hit

point maximum is reduced to 0. Spellcasting. Geryon casts one of the following spells, requiring no material components and using Charisma as the spellcasting ability (spell save DC 21): At will

Reduced-threat Aboleth

Monsters Tales from the Yawning Portal

can see the creature. Reduced Threat. This creature has -2 penalty on all ability checks and saving throws.Multiattack. The aboleth makes three tentacle attacks. Tentacle. Melee Weapon Attack: +7

different one. Regional Effects The region containing an aboleth’s lair is warped by the creature’s presence, which creates one or more of the following effects: Underground surfaces within

Yeenoghu Legacy

Monsters Out of the Abyss

, causing them to have advantage on melee weapon attack rolls and causing attack rolls to have advantage against them. Regional Effects The region containing Yeenoghu’s lair is warped by his

magic, creating one or more of the following effects: Within 1 mile of the lair, large iron spikes grow out of the ground and stone surfaces. Yeenoghu impales the bodies of the slain on these spikes

Yeenoghu

Monsters Mordenkainen Presents: Monsters of the Multiverse

or hyena that Yeenoghu can see can use its reaction to move up to its speed. Regional Effects The region containing Yeenoghu’s lair is warped by his magic, creating one or more of the

display of wasteful slaughter. Spiky Terrain. Within 1 mile of the lair, large iron spikes grow out of the ground and stone surfaces. Yeenoghu impales the bodies of the slain on these spikes. If

Adult Lunar Dragon

Monsters Spelljammer: Adventures in Space

","rollDamageType":"cold"} cold damage, and its speed is reduced to 0 until the end of its next turn. On a successful save, the creature takes half as much damage, and its speed isn’t

and heat vents, wild gardens, crystal formations, magical phenomena, or an ecosystem of lesser life forms that have adapted to living with the dragon. Regional Effects The region containing an

Ancient Lunar Dragon

Monsters Spelljammer: Adventures in Space

Breath","rollDamageType":"cold"} cold damage, and its speed is reduced to 0 until the end of its next turn. On a successful save, the creature takes half as much damage, and its speed isn’t

containing an ancient or adult lunar dragon’s lair is warped by the dragon’s magic, which produces one or more of the following effects: Black Frost. A thin layer of black frost

Otherworldly Corrupter

Monsters The Book of Many Things

poison;{"diceNotation":"6d6","rollType":"damage","rollAction":"Traps (Poison)","rollDamageType":"poison"}, chosen by the villain when the villain uses this action. Regional Effects The region containing

":"roll", "rollAction":"Days"} days.PsychicChange Shape. The corrupter magically transforms into any creature that is Small or Medium, while retaining its game statistics (other than its size). This transformation ends if the corrupter is reduced to 0 hit points or uses a bonus action to end it.

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

. 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

Umbraxakar

Monsters Waterdeep: Dungeon of the Mad Mage

successful one. A humanoid reduced to 0 hit points by this damage dies, and an undead shadow rises from its corpse and acts immediately after Umbraxakar in the initiative count. The shadow is under

until the end of its next turn. Regional Effects The region containing a legendary bronze dragon’s lair is warped by the dragon’s magic. Once per day, the dragon can alter the weather

Feylost

Backgrounds The Wild Beyond the Witchlight

are haunted by the fact that the Feywild—a mirror world hidden behind a mere twist of perception—is only a hair’s breadth away. Although your memories of the Feywild grow fainter

traveler’s clothes, three trinkets (each determined by rolling on the Feywild Trinkets table), and a pouch containing 8 gp Fey Mark You were transformed in some small way by your stay in the Feywild

Claugiyliamatar

Monsters Storm King's Thunder

acrid whiff of the creature’s poison breath. The moss-covered trees grow close together except where winding pathways trace their way like a maze into the heart of the forest. The light that

charmed by the dragon until initiative count 20 on the next round. Regional Effects The region containing a legendary green dragon’s lair is warped by the dragon’s magic, which creates one

Imix

Monsters Princes of the Apocalypse

of Imix, and disappear if Imix is reduced to 0 hit points.Imix can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end

":"roll","rollAction":"Destruction Chance"} that any container of fluid held or carried by an affected creature (for example, a magic potion) is destroyed. Regional Effects The region containing an

Juiblex

Monsters Mordenkainen Presents: Monsters of the Multiverse

);{"diceNotation":"4d10","rollType":"damage","rollAction":"Sticky Slime","rollDamageType":"fire"} fire damage. Regional Effects The region containing Juiblex’s lair is warped by its magic

critical hit or is reduced to 0 hit points, it sprays acid; each creature within 5 feet of it takes acid damage equal to its number of Hit Dice. Acid, Poison; Bludgeoning, Piercing, and Slashing that is NonmagicalCold, Fire, Lightning

Claugiyliamatar (possessed)

Monsters Divine Contention

trees grow close together except where winding pathways trace their way like a maze into the heart of the forest. The light that reaches the forest floor carries an emerald green cast, and every

. Regional Effects The region containing a legendary green dragon’s lair is warped by the dragon’s magic, which creates one or more of the following effects: Thickets form labyrinthine

Ancient Sapphire Dragon

Monsters Fizban's Treasury of Dragons

caverns and complex tunnel systems. As they grow older, they continually renovate their lairs, using their tunneling abilities and command over stone. Sapphire dragons eventually create dizzying

dragon took part in.A Sapphire Dragon’s Lair Sapphire dragons make their homes in extensive cave systems. As they grow older, they make increasingly complex renovations to their lairs, using

Marine

Backgrounds Ghosts of Saltmarsh

belonged to a fallen comrade, a folded flag emblazoned with the symbol of your ship or company, a set of traveler’s clothes, and a belt pouch containing 10 gp FEATURE: STEADY You can move twice

eradicated. 6 My commander betrayed my unit, and I will have revenge. D6 FLAW 1 I grow combative and unpredictable when I drink. 2 I find civilian life

Zargon the Returner

Monsters Quests from the Infinite Staircase

successful save, the creature takes half as much damage only. A poisoned creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. A creature reduced to

again. Regional Effects The region containing Zargon’s lair is warped by Zargon’s unnatural presence, creating one or more of the following effects: Arcane Enervation. Enemies of Zargon

Arasta

Monsters Mythic Odysseys of Theros

Armor of Spiders (Mythic Trait; Recharges after a Short or Long Rest). If Arasta is reduced to 0 hit points, she doesn’t die or fall unconscious. Instead, she regains 200 hit points. In

The region containing Arasta’s lair is warped by her presence, which creates one or more of the following effects: Spiders and insects within 1 mile of Arasta’s lair serve as her eyes

Hythonia

Monsters Mythic Odysseys of Theros

; Recharges after a Short or Long Rest). If Hythonia is reduced to 0 hit points, she doesn’t die or fall unconscious. Instead, she sheds her skin, regains 199 hit points, and moves up to her speed

creature has disadvantage on Intelligence checks and Intelligence saving throws, and it behaves as if under the effect of the confusion spell. Regional Effects The region containing Hythonia’s

Hierophant Medusa

Monsters The Book of Many Things

DC 15 Constitution saving throw. On a failed save, a target’s speed is reduced to 0 and can’t increase. On a successful save, its speed is halved. The target’s speed returns to normal

a surface such as a ceiling with no way to remain there (for example, sufficient handholds), it falls at the end of this movement. Regional Effects The region containing a medusa’s lair is

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