consisting reaction guide to have region

Flind

Monsters Mordenkainen Presents: Monsters of the Multiverse

"} bludgeoning damage, and the target must make a DC 16 Wisdom saving throw. On a failed save, the target must use its reaction, if available, to make one melee attack against a random creature, other than

Yeenoghu, a flind uses demonic insight to guide the gnolls toward weak prey ripe for slaughter. Unlike other leaders who might skulk behind their minions, a flind leads the charge in battle. Its flail causes wracking pain, paralysis, and disorientation in those it strikes.

Zuggtmoy Legacy

Monsters Out of the Abyss

Thrall. When Zuggtmoy is hit by an attack, one creature within 5 feet of Zuggtmoy that is charmed by her must use its reaction to be hit by the attack instead.Zuggtmoy can take 3 legendary actions

turn. Attack. Zuggtmoy makes one pseudopod attack. Exert Will. One creature charmed by Zuggtmoy that she can see must use its reaction to move up to its speed as she directs or to make a weapon

Cradle of the Storm Scion

Monsters Bigby Presents: Glory of the Giants

sleep is troubled by nightmares. When roused, the cradle takes on a vaguely giant-shaped form consisting of air, water, and ice whirling in fury. If the cradle is destroyed, the scion of Stronmaus

churning elements. Regional Effects The region surrounding a scion of Stronmaus is altered by the giant’s magic, creating one or more of the following effects: Elemental Portals. Two-way portals

Goliath Werebear

Monsters Icewind Dale: Rime of the Frostmaiden

, Oyaminartok is not a monster but a force of good in the region, and she passes her curse only to goliaths whose hearts are pure. Oyaminartok and others of her kind try to help creatures they come across, for

the weather and the geography of Icewind Dale can be brutal. They know the safest routes across the tundra, and they can help guide travelers through the Sea of Moving Ice and across its ever-shifting

Dracohydra

Monsters Fizban's Treasury of Dragons

. For each head the dracohydra has beyond one, it gets an extra reaction that can be used only for opportunity attacks. Wakeful. While the dracohydra sleeps, at least one of its heads is

chromatic dragon’s elemental power. These gluttonous creatures’ appearance heralds disaster for any region they settle in, as they feed relentlessly—with each head demanding a feast

Graz'zt

Monsters Mordenkainen Presents: Monsters of the Multiverse

one Wave of Sorrow attack. Dance, My Puppet! One creature charmed by Graz’zt that Graz’zt can see must use its reaction to move up to its speed as Graz’zt directs.The appearance of

have disadvantage on Dexterity (Stealth) checks made to hide. Regional Effects The region containing Graz’zt’s lair is warped by his magic, creating one or more of the following effects

Yeenoghu Legacy

Monsters Out of the Abyss

condition. Each gnoll or hyena that Yeenoghu can see can use its reaction to move up to its speed. Until the next initiative count 20, all gnoll;gnolls and hyena;hyenas within the lair are enraged

, 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

Graz'zt Legacy

Monsters Out of the Abyss

reaction to move up to its speed as Graz’zt directs. Sow Discord. Graz’zt casts crown of madness or dissonant whispers. Teleport. Graz’zt uses his Teleport action.The appearance of the

(Stealth) checks made to hide. Regional Effects The region containing Graz’zt’s lair is warped by his magic, creating one or more of the following effects: Flat surfaces within 1 mile of

Scion of Stronmaus

Monsters Bigby Presents: Glory of the Giants

vaguely giant-shaped form consisting of air, water, and ice whirling in fury. If the cradle is destroyed, the scion of Stronmaus inside it awakens. Among the mightiest creatures of all giantkind, the

elemental might like few other forces in the multiverse can muster: blades of lightning, boulder-sized hailstones, and a storm of churning elements. Regional Effects The region surrounding a scion

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

Cradle of the Frost Scion

Monsters Bigby Presents: Glory of the Giants

creatures standing on it. Regional Effects The region surrounding a scion of Thrym is altered by the giant’s magic, creating one or more of the following effects: Biting Chill. Extreme cold

envelops the land within 6 miles of the scion (see the Dungeon Master’s Guide for rules on extreme cold). If the climate in the area already features extreme cold, the cold is numbing—creatures

Belashyrra

Monsters Eberron: Rising from the Last War

succeed on a DC 22 Wisdom saving throw or take 22 (4d10);{"diceNotation":"4d10","rollType":"damage","rollAction":"Implant Fear","rollDamageType":"psychic"} psychic damage and immediately use its reaction

’s lair is known to touch remote areas of the Shadow Marches and caverns below Xen’drik. A region containing a passage to Belashyrra’s lair is warped by its magic, which creates one or

Khrusor, Spear of Heliod

Magic Items Mythic Odysseys of Theros

“Artifacts” in chapter 7 of the Dungeon Master’s Guide for details on randomly determined properties. Luminous. The spear sheds bright light in a 30-foot radius and dim light for an

additional 30 feet. The light is sunlight. Sun’s Retaliation. When you take damage from a creature within 5 feet of you, you can use your reaction to make a melee attack with the spear against that

Adult Lunar Dragon

Monsters Spelljammer: Adventures in Space

’s Guide) taken from vessels that dared to invade the dragon’s territory. A lunar dragon can become incorporeal, but not to the extent that it can pass through other creatures or solid

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

the Astral Adventurer’s Guide) taken from vessels that dared to invade the dragon’s territory. A lunar dragon can become incorporeal, but not to the extent that it can pass through other

contain natural springs 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

Scion of Thrym

Monsters Bigby Presents: Glory of the Giants

Thrym, the scion can achieve a tremendous feat of strength: creating a glacier in the ground and hurling it skyward, along with any creatures standing on it. Regional Effects The region surrounding a

’s Guide for rules on extreme cold). If the climate in the area already features extreme cold, the cold is numbing—creatures in the area without immunity or resistance to cold damage have

Adult Time Dragon

Monsters Planescape: Adventures in the Multiverse

action on its turn, not both. The creature also can’t take a reaction or a bonus action. Timeline Divergence. The dragon chooses a space it can fit into within its lair. The dragon exists

attack can target both the dragon’s spaces at the same time, the dragon is affected only once. Regional Effects The region surrounding an ancient or adult time dragon’s lair is altered by

Demogorgon

Monsters Mordenkainen Presents: Monsters of the Multiverse

its action, reaction, and movement. Spellcasting. Demogorgon casts one of the following spells, requiring no material components and using Charisma as the spellcasting ability (spell save DC 23

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

Effects A region containing a passage to Dyrrn’s lair is warped in one or more of these ways: Plants and animals raised within 2 mile of the passage have twisted, aberrant forms. Use the

character flaw that lasts until cured. Chapter 8 of the Dungeon Master’s Guide has more information on madness. Madness of Dyrrn d6 Flaw (lasts until cured) 1 “There&rsquo

Juiblex Legacy

Monsters Out of the Abyss

Guide) appears on a spot on the ceiling that Juiblex chooses within the lair. The slime disintegrates after 1 hour. Regional Effects The region containing Juiblex’s lair is warped by its

Master’s Guide for more on madness. Madness of Juiblex d100 Flaw (lasts until cured) 01–20 “I must consume everything I can!” 21–40 “I

Baphomet Legacy

Monsters Out of the Abyss

that is no longer in any dimension than 100 feet. The effect ends on the next initiative count 20. Regional Effects The region containing Baphomet’s lair is warped by his magic, creating one or

until cured. See the Dungeon Master’s Guide for more on madness. Madness of Baphomet d100 Flaw (lasts until cured) 01–20 “My anger consumes me. I can’t be

Juiblex

Monsters Mordenkainen Presents: Monsters of the Multiverse

of the following lair actions; it can’t take the same lair action two rounds in a row: Green Slime. A green slime (see the Dungeon Master’s Guide) appears on a spot on the ceiling that

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

Demogorgon Legacy

Monsters Out of the Abyss

doesn’t need to concentrate on the spells, which end on initiative count 20 of the next round. Regional Effects The region containing Demogorgon’s lair is warped by his magic

demon lord, roll on the Madness of Demogorgon table to determine the nature of the madness, which is a character flaw that lasts until cured. See the Dungeon Master’s Guide for more on

Fraz-Urb'luu Legacy

Monsters Out of the Abyss

take 33 (6d10) psychic damage. Regional Effects The region containing Fraz-Urb’luu’s lair is warped by his magic, creating one or more of the following effects: Intelligent

’s Guide for more on madness. Madness of Fraz-Urb’luu d100 Flaw (lasts until cured) 01–20 “I never let anyone know the truth about my actions or

Ancient Time Dragon

Monsters Planescape: Adventures in the Multiverse

affected creature can move or take an action on its turn, not both. The creature also can’t take a reaction or a bonus action. Timeline Divergence. The dragon chooses a space it can fit into

moving or acting. If an effect or attack can target both the dragon’s spaces at the same time, the dragon is affected only once. Regional Effects The region surrounding an ancient or adult time

Baphomet

Monsters Mordenkainen Presents: Monsters of the Multiverse

for 1 minute or until Baphomet takes this lair action again. Regional Effects The region containing Baphomet’s lair is warped by his magic, creating one or more of the following effects

after a Short or Long Rest). As an action, this creature allows each ally within 30 feet of it that has the Unerring Tracker trait to make one weapon attack as a reaction against the target of that

Geryon (Variant)

Monsters Mordenkainen Presents: Monsters of the Multiverse

Effects The region containing Geryon’s lair is warped by his magic, creating one or more of the following effects: Chilling Wind. Freezing strong winds howl around the area within 1 mile of

(Recharge 5–6). As a reaction when this creature takes damage, it can roll a d10 and subtract the number rolled from the damage. Cold, Fire, PoisonBludgeoning, Piercing, and Slashing from Nonmagical Attacks that aren't Silvered

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

Zuggtmoy

Monsters Mordenkainen Presents: Monsters of the Multiverse

. One creature charmed by Zuggtmoy that she can see must use its reaction, if available, to move up to its speed as she directs or to make one weapon attack against a target that she designates.The Demon

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

Geryon

Monsters Mordenkainen Presents: Monsters of the Multiverse

The region containing Geryon’s lair is warped by his magic, creating one or more of the following effects: Chilling Wind. Freezing strong winds howl around the area within 1 mile of the lair

–6). As a reaction when this creature takes damage, it can roll a d10 and subtract the number rolled from the damage. Geryon (Variant);VARIANT: SOUND THE HORN Geryon can have an action that

Adult Deep Dragon

Monsters Fizban's Treasury of Dragons

creature within 30 feet of it that it can see. The target must succeed on a DC 16 Wisdom saving throw or use its reaction to make a melee weapon attack against a random creature within reach. If no

creatures are within reach, or the target can’t take a reaction, it takes 5 (1d10);{"diceNotation":"1d10", "rollType":"damage", "rollAction":"Commanding Spores", "rollDamageType":"psychic"} psychic

Hierophant Medusa

Monsters The Book of Many Things

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

until the creature is freed by the Greater Restoration spell or other magic. A creature can use its reaction, if available, to shut its eyes to avoid the saving throw. If the creature does so, it has the blinded condition until the end of its next turn.

Ancient Deep Dragon

Monsters Fizban's Treasury of Dragons

around a creature within 30 feet of it that it can see. The target must succeed on a DC 19 Wisdom saving throw or use its reaction to make a melee weapon attack against a random creature within reach. If

no creatures are within reach, or the target can’t take a reaction, it takes 11 (2d10);{"diceNotation":"2d10", "rollType":"damage", "rollAction":"Commanding Spores", "rollDamageType":"psychic

Keeper of the Blight

monsters

", "rollDamageType":"Psychic"} Psychic damage, and the target must immediately take a Reaction to make a melee or ranged attack against a creature of the keeper’s choice that is within reach or range of

beings that dwell in a natural region that becomes overtaken by a supernatural or spiritual rot. Where they once tended the balance and cycles of their home, keepers are consumed by the blight and

Shub-Niggurath

monsters

represents burgeoning life unburdened by the demands of ethics, laws, or society. Her worshippers exist in isolated enclaves, largely consisting of families, isolated villagers, or exiles who renounce the

in circles or guiding them away from the community. Beasts in the region grow violent, attacking outsiders but allowing cultists to hunt them down with ease. Communities in the area face a ghastly

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