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Regional Effects

Compendium - Sources->Dungeons & Dragons->Strixhaven: A Curriculum of Chaos

Regional Effects Murgaxor’s ritual wreaks havoc on the equilibrium of life and death, creating the following regional effects in the Ruins of Caerdoon and the fortress, which is detailed in a later

section. These effects end 1d6 days after the ritual ends or is interrupted: Clinging to Life. Death saving throws are made with advantage. Grievous Wounds. Any creature that scores a critical hit

Regional Effects

Compendium - Sources->Dungeons & Dragons->Basic Rules (2014)

Regional Effects The mere presence of a legendary creature can have strange and wondrous effects on its environment, as noted in this section. Regional effects end abruptly or dissipate over time when the legendary creature dies.

Regional Effects

Compendium - Sources->Dungeons & Dragons->Vecna: Eve of Ruin

Regional Effects The region containing an 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

Regional Effects

Compendium - Sources->Dungeons & Dragons->Icewind Dale: Rime of the Frostmaiden

Regional Effects Auril’s presence creates the following regional effects, which fade 1d10 days after all three of her forms are destroyed: The save DC to resist the effects of extreme cold is 15

Regional Effects

Compendium - Sources->Dungeons & Dragons->Volo's Guide to Monsters

Regional Effects A hag’s foul nature slowly suffuses the environment around her lair, twisting it to evil. Each hag’s lair is the source of three to five regional effects; the home of a grandmother

, an auntie, or a coven has more effects than the lair of a single hag, including some that can directly harm intruders. Any regional effect that requires a creature to make a saving throw uses the save

Regional Effects

Compendium - Sources->Dungeons & Dragons->Fizban's Treasury of Dragons

Regional Effects My favorite lair I’ve ever visited was a crystal dragon’s. It turned everyone’s voice into a high-pitched squeak. Remember, not all lair shenanigans are devastating! -Fizban The

area around a legendary dragon’s lair is altered by the dragon’s presence. The regional effects described in the Monster Manual and chapters 5 and 6 of this book are not the only ways a dragon’s

Merrenoloth Legacy

Monsters Mordenkainen’s Tome of Foes

when a Medium or smaller creature flies into that area or starts its turn flying there, it must succeed on a DC 13 Strength saving throw or be knocked prone. Regional Effects A merrenoloth imbues its

effects. Magic Weapons. The merrenoloth's weapon attacks are magical. Teleport. As a bonus action, the merrenoloth magically teleports, along with any equipment it is wearing or carrying, up to 60 feet

Murgaxor

Monsters Strixhaven: A Curriculum of Chaos

commands, take their turns on initiative count 15 (losing initiative ties), and fight until destroyed. Regional Effects Murgaxor’s ritual wreaks havoc on the equilibrium of life and death

, creating the following regional effects in the Ruins of Caerdoon and the fortress. These effects end 1d6;{"diceNotation":"1d6","rollType":"roll","rollAction":"Days Regional Effects End"} days after the

Kraken Legacy

Monsters Basic Rules (2014)

","rollAction":"Charged Water","rollDamageType":"lightning"} lightning damage on a failed save, or half as much damage on a successful one. Regional Effects The region containing a kraken’s lair

, all of these regional effects fade immediately.Lightning; Bludgeoning, Piercing, and Slashing from Nonmagical Attacks

Diderius

Monsters Tyranny of Dragons

, it must make a DC 16 Constitution saving throw. On a failed save, it takes 1d6 necrotic damage per level of the spell, and the spell has no effect and is wasted. Regional Effects A mummy lord

destroyed, these regional effects end immediately.Necrotic, Poison; Bludgeoning, Piercing, and Slashing from Nonmagical AttacksFire

Storm Giant Quintessent Legacy

Monsters Volo's Guide to Monsters

flames in its area. Protected flames, such as those of lanterns, have a 50 percent chance of being extinguished. Regional Effects The region containing a storm giant quintessent's lair is warped by the

regional effects end immediately. Rain, snow, and blowing dust abate gradually within 1d8;{"diceNotation":"1d8","rollType":"roll"} days.Lightning, ThunderCold; Bludgeoning, Piercing, and Slashing from Nonmagical Attacks

Balhannoth Legacy

Monsters Mordenkainen’s Tome of Foes

in the area reshapes to assume the appearance of a location sought by one intelligent creature whose mind the balhannoth has read (see Regional Effects below). The transformation affects nonliving

the balhannoth attacks the target. Regional Effects A region containing a balhannoth’s lair becomes warped by the creature’s unnatural presence, which creates one or more of the

Slarkrethel

Monsters Storm King's Thunder

","rollDamageType":"lightning"} lightning damage on a failed save, or half as much damage on a successful one. Regional Effects The region containing a kraken’s lair is warped by the

miles of the lair that have an Intelligence score of 2 or lower are charmed by the kraken and aggressive toward intruders in the area. When the kraken dies, all of these regional effects fade immediately.Lightning; Bludgeoning, Piercing, and Slashing from Nonmagical Attacks

Merrenoloth

Monsters Mordenkainen Presents: Monsters of the Multiverse

, increasing its speed by 30 feet until initiative count 20 on the next round. Repair. The vessel regains 22 (4d10);{"diceNotation":"4d10","rollType":"heal","rollAction":"Repair"} hit points. Regional

Effects A merrenoloth imbues its vessel with powerful magic that creates one or more of the following effects: Unerring. The vessel always stays on course to the destination the merrenoloth names

Juvenile Kraken

Monsters Ghosts of Saltmarsh

","rollAction":"Charged Water","rollDamageType":"lightning"} lightning damage on a failed save, or half as much damage on a successful one. Regional Effects The region containing a kraken’s lair is

creatures within 6 miles of the lair that have an Intelligence score of 2 or lower are charmed by the kraken and aggressive toward intruders in the area. When the kraken dies, all of these regional effects fade immediately.Lightning; Bludgeoning, Piercing, and Slashing from Nonmagical Attacks

Zariel Legacy

Monsters Mordenkainen’s Tome of Foes

the effect on itself on a success. Zariel casts her innate fireball spell. Regional Effects. The region containing Zariel’s lair is warped by her magic, which creates one or more of the

, she can choose to succeed instead. Magic Resistance. Zariel has advantage on saving throws against spells and other magical effects. Regeneration. Zariel regains 20 hit points at the start of her

Froghemoth Elder

Monsters Quests from the Infinite Staircase

next turn. While charmed in this way, the target has the incapacitated condition, and its speed is 0. Regional Effects The region within 1 mile of a froghemoth elder’s lair is altered by the

. Wildlife encountered near the lair often sport mutations, such as extra limbs or eyes, glowing secretions, or vestigial tentacles. If the froghemoth elder dies, these effects fade over the course of 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Regional Effect Fade Time"} days.Fire, Lightning

Riverine

Monsters Journeys through the Radiant Citadel

Fury","rollDamageType":"cold"} cold damage. Regional Effects The region containing a riverine’s lair flourishes under the magic of the riverine’s presence, which creates one or more of

, the flora and fauna return to normal levels, and its river dries out over the course of 1d10;{"diceNotation":"1d10","rollType":"roll","rollAction":"Regional Effect Fade Days"} days. All other effects

Balhannoth

Monsters Mordenkainen Presents: Monsters of the Multiverse

location sought by one Humanoid whose desires the balhannoth has sensed (see Regional Effects below). The transformation affects nonliving material only and can’t create anything with moving

transformation lasts until the balhannoth dies or takes this lair action again. Regional Effects A region containing a balhannoth’s lair becomes warped by the creature’s unnatural presence

Storm Giant Quintessent

Monsters Mordenkainen Presents: Monsters of the Multiverse

lanterns, have a 50 percent chance of being extinguished. Regional Effects The region containing a storm giant quintessent’s lair is warped by the giant’s presence, which creates one or more

. While dispersed, the giant can’t take any actions other than lair actions, and it can’t be targeted by attacks, spells, or other effects. The giant can’t use this ability outside its

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

. Magic Resistance. Demogorgon has advantage on saving throws against spells and other magical effects. Magic Weapons. Demogorgon’s weapon attacks are magical. Two Heads. Demogorgon has

Unicorn Legacy

Monsters Basic Rules (2014)

surrounded by mighty oaks, a flower-covered hilltop alive with butterflies, or some other serene woodland location. Regional Effects Transformed by the creature’s celestial presence, the domain of

without trace 1/day each: calm emotions, dispel evil and good, entangle Magic Resistance. The unicorn has advantage on saving throws against spells and other magical effects. Magic Weapons. The

Olhydra

Monsters Princes of the Apocalypse

":"3d6","rollType":"damage","rollAction":"freezing cloud","rollDamageType":"cold"} cold damage. Regional Effects Olhydra’s presence in an elemental node creates a number of widespread effects

mortal world to dwell near those points. If Olhydra is destroyed or banished back to her home plane, the regional effects fade over the next 1d10;{"diceNotation":"1d10","rollType":"roll"} days.Acid, Cold, PoisonLightning; Bludgeoning, Piercing, and Slashing from Nonmagical Attacks

Ancient Deep Crow

Monsters Acquisitions Incorporated

of volcanic rock the creatures prize as roosts are common in such places, whose ambient warmth provides constant temperature regulation for the creature's eggs. Regional Effects The region containing

Magic Resistance. The ancient deep crow has advantage on saving throws against spells and other magical effects. Shadow Stealth. While in dim light or darkness, the ancient deep crow can take the

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

advantage on saving throws against spells and other magical effects. Magic Weapons. Fraz-Urb’luu’s weapon attacks are magical. Undetectable. Fraz-Urb’luu can’t be targeted by

Graz'zt Legacy

Monsters Out of the Abyss

(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

;zt has advantage on saving throws against spells and other magical effects. Magic Weapons. Graz’zt’s weapon attacks are magical.Multiattack. Graz’zt attacks twice with the Wave of

Ogrémoch

Monsters Princes of the Apocalypse

other than Ogrémoch on the ground in the area must succeed on a DC 15 Strength or Dexterity saving throw (target’s choice) or be knocked prone. Regional Effects The region containing

creatures into the mortal world to dwell near those points. If Ogrémoch is destroyed or banished back to his home plane, the regional effects fade over the next 1d10;{"diceNotation":"1d10","rollType":"roll"} days.PoisonBludgeoning, Piercing, and Slashing from Nonmagical Attacks

Mummy Lord Legacy

Monsters Basic Rules (2014)

. Regional Effects A mummy lord’s temple or tomb is warped in any of the following ways by the creature’s dark presence: Food instantly molders and water instantly evaporates when brought

all saving throws. The curse lasts until removed by a remove curse spell or other magic. If the mummy lord is destroyed, these regional effects end immediately.Necrotic, Poison; Bludgeoning, Piercing, and Slashing from Nonmagical AttacksFire

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

be affected by this regional effect again for 24 hours. If Baphomet dies, these effects fade over the course of 1d10;{"diceNotation":"1d10","rollType":"roll"} days. Madness of Baphomet If a

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

saving throw, he can choose to succeed instead. Magic Resistance. Orcus has advantage on saving throws against spells and other magical effects. Magic Weapons. Orcus’s weapon attacks are magical

Valin Sarnaster

Monsters Candlekeep Mysteries

the spell, and the spell has no effect and is wasted. Regional Effects Valin’s tomb is warped in any of the following ways by the creature’s dark presence: Food instantly molders

cursed target has disadvantage on all saving throws. The curse lasts until removed by a remove curse spell or other magic. If Valin is destroyed, these regional effects end immediately.Necrotic, Poison; Bludgeoning, Piercing, and Slashing from Nonmagical AttacksFire

Adult Lunar Dragon

Monsters Spelljammer: Adventures in Space

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 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 covers the ground

Ancient Lunar Dragon

Monsters Spelljammer: Adventures in Space

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

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

Vampire Spawn Legacy

Monsters Basic Rules (2014)

of the night. Regional Effects The region surrounding a vampire’s lair is warped by the creature’s unnatural presence, creating any of the following effects: There’s a noticeable

grasping claws and writhing serpents. If the vampire is destroyed, these effects end after 2d6;{"diceNotation":"2d6","rollType":"roll"} days.Necrotic; Bludgeoning, Piercing, and Slashing from Nonmagical Attacks

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

creature that succeeds on this saving throw can’t be affected by this regional effect again for 24 hours. If Yeenoghu dies, these effects fade over the course of 1d10;{"diceNotation":"1d10

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