before being days causing rating

Death Knight

Monsters Monster Manual

", "rollType":"roll", "rollAction":"Undead Restoration"} days, reviving with all its Hit Points. The new body appears in a location significant to the death knight.Multiattack. The death knight makes

MagicParry. Trigger: The death knight is hit by a melee attack roll while holding a weapon. Response: The death knight adds 6 to its AC against that attack, possibly causing it to miss.Legendary Action

Blackrazor

Magic Items Dungeon Master’s Guide

. Blackrazor’s hunger for souls must be regularly fed. If the sword goes 3 days or more without consuming a soul, a conflict between it and its wielder occurs at the next sunset. Destroying

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.

Yeenoghu

Monsters Mordenkainen Presents: Monsters of the Multiverse

them into flind;flinds. Yeenoghu takes pleasure in causing fear before death, and he sows sorrow and despair through destroying beloved things. He doesn’t parlay; to meet him is to do battle with

), and there are few structures or signs of civilization on his layer of the Abyss. The challenge rating of Yeenoghu is 25 (75,000 XP) when he’s encountered in his lair. Lair Actions On

Dusk Hag

Monsters Eberron: Rising from the Last War

undertaking quests or making bargains with a dusk hag in exchange for its prophecies and visions of the future. But the information gained from a dusk hag often has a way of causing more pain than joy. Like

all hags, dusk hags enjoy causing strife to those who bargain with them, and find ways to twist and turn promises to their own advantage. The Dusk Hag Prophecies table provides examples of the sort of

Corpse Flower

Monsters Mordenkainen Presents: Monsters of the Multiverse

malevolent bent and despises the living. With or without corpses nested in its body, a corpse flower exudes a stench of decay that can overwhelm the senses of nearby creatures, causing them to become

nauseated. The stench, which serves as a defense mechanism, fades 2d4;{"diceNotation":"2d4", "rollType":"roll", "rollAction":"Days"} days after the corpse flower dies.Digest. The corpse flower digests

Jiangshi

Monsters Van Richten’s Guide to Ravenloft

. After regaining hit points from this action, the jiangshi gains the following benefits for 7 days: its walking speed increases to 40 feet, and it gains a flying speed equal to its walking speed and

the initiative order. If this wight slays a Humanoid with its Life Drain, the wight transforms into a jiangshi 5 days later. Change Shape. The jiangshi polymorphs into a Beast, a Humanoid, or an Undead

Lich Legacy

Monsters Basic Rules (2014)

":"1d10","rollType":"roll","rollAction":"Days"} days, regaining all its hit points and becoming active again. The new body appears within 5 feet of the phylactery. Spellcasting. The lich is an 18th-level

, emerging to destroy those who dare to disturb the lich’s work. A lich encountered in its lair has a challenge rating of 22 (41,000 XP). Lair Actions On initiative count 20 (losing initiative

Madcap

Monsters Baldur’s Gate: Descent into Avernus

sustain its unnatural existence, a redcap must soak its hat in the fresh blood of its victims. If the blood isn’t replenished at least once every three days, the redcap vanishes as if it had never

creature even more psychotic, causing it to brood over irrational hatreds. A group of madcaps will sometimes band together over a shared hatred of something, such as music, creatures with curly hair

Beholder Legacy

Monsters Monster Manual (2014)

closing to melee range. A beholder encountered in its lair has a challenge rating of 14 (11,500 XP). Lair Actions When fighting inside its lair, a beholder can invoke the ambient magic to take lair

natural surfaces and to nonmagical objects that aren’t on anyone’s person. If the beholder dies, these effects fade over the course of 1d10;{"diceNotation":"1d10","rollAction":"Days","rollType":"roll"} days.

Riverine

Monsters Journeys through the Radiant Citadel

along the river’s path—such as its source or a significant waterfall—can also be used as lairs by a riverine. A riverine encountered in its lair has a challenge rating of 13 (10,000 XP

, 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

Ancient Brass Dragon Legacy

Monsters Basic Rules (2014)

damage or someone uses an action to wake it. Change Shape. The dragon magically polymorphs into a humanoid or beast that has a challenge rating no higher than its own, or back into its true form. It

presence and location. If the dragon dies, the tracks fade in 1d10;{"diceNotation":"1d10","rollType":"roll"} days, but the other effects fade immediately.Fire

Chardalyn Berserker

Monsters Icewind Dale: Rime of the Frostmaiden

by any magic that ends a curse, but after ten days, it can be reversed only by a wish spell or divine intervention. A creature wounded by one of these chardalyn weapons can feel a sudden sickness

creep over them, but it passes quickly. Chardalyn Madness. Prolonged contact with the demonic magic imprinted on the chardalyn has afflicted the berserker with a form of madness, causing the berserker

Demilich (Variant) Legacy

Monsters Monster Manual (2014)

its existence. Few liches seek to become demiliches, for it means an end to the existence they hoped to preserve by becoming undead. However, time can erode the lich’s reason and memory, causing

be permanently destroyed. Its skull reforms after 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Enduring Existence"} days, restoring the creature to its wretched state. If it has the

Adult Silver Dragon Legacy

Monsters Basic Rules (2014)

turns, ending the effect on itself on a success. Change Shape. The dragon magically polymorphs into a humanoid or beast that has a challenge rating no higher than its own, or back into its true form

its allies. Such creatures descend at a rate of 60 feet per round and take no falling damage. Given days or longer to work, the dragon can make clouds and fog within its lair as solid as stone, forming

Ambitious Assassin

Monsters The Book of Many Things

;s a hidden thieves’ guildhall or a lavish manse. The lair is filled with clever defenses to disorient, weaken, and kill intruders. The villain’s challenge rating increases while the

to poison damage. If the villain dies, these effects fade over the course of 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Days"} days.

Yeenoghu Legacy

Monsters Out of the Abyss

atrocities in his name. Yeenoghu takes pleasure in causing fear before death, and he sows sorrow and despair through destroying beloved things. He doesn’t parlay; to meet him is to do battle with him

, 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

Enchanting Infiltrator

Monsters The Book of Many Things

’s a hidden thieves’ guildhall or a lavish manse. The lair is filled with clever defenses to disorient, weaken, and kill intruders. The villain’s challenge rating increases while the

resistance to poison damage. If the villain dies, these effects fade over the course of 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Days"} days.

Ancient Silver Dragon Legacy

Monsters Basic Rules (2014)

of its turns, ending the effect on itself on a success. Change Shape. The dragon magically polymorphs into a humanoid or beast that has a challenge rating no higher than its own, or back into its

’s or its allies. Such creatures descend at a rate of 60 feet per round and take no falling damage. Given days or longer to work, the dragon can make clouds and fog within its lair as solid as stone

Adult Time Dragon

Monsters Planescape: Adventures in the Multiverse

their utmost to preserve these historical sites. A time dragon’s insatiable desire for knowledge means it’s likely to have more than one such lair. The challenge rating of an ancient time

(your choice). Timelessness. Beasts, Humanoids, and Plants within 3 miles of the lair age only 1 year for every 10 years that pass. If the dragon dies, these effects fade over the course of 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Days"} days.

Death Tyrant Legacy

Monsters Monster Manual (2014)

it contains more trappings of death and decay. A death tyrant encountered in its lair has a challenge rating of 15 (13,000 XP). Lair Actions When fighting inside its lair, a death tyrant can invoke

’s lair, roll a d20 for that creature. On a roll of 10 or lower, the creature is subjected to one random eye ray of the tyrant. If the death tyrant dies, these effects fade over the course of 1d10;{"diceNotation":"1d10","rollAction":"Days","rollType":"roll"} days.Poison

Ancient Copper Dragon Legacy

Monsters Basic Rules (2014)

at the end of each of its turns, ending the effect on itself with a successful save. Change Shape. The dragon magically polymorphs into a humanoid or beast that has a challenge rating no higher than

giggling. Even serious matters suddenly seem amusing. If the dragon dies, the magic carvings fade over the course of 1d10;{"diceNotation":"1d10","rollType":"roll"} days. The other effects end immediately.Acid

Ancient Time Dragon

Monsters Planescape: Adventures in the Multiverse

challenge rating of an ancient or adult time dragon;adult time dragon increases by 1 when it’s encountered in its lair. Lair Actions On initiative count 20 (losing initiative ties), the

area take 10 minutes or 2 hours (your choice). Timelessness. Beasts, Humanoids, and Plants within 3 miles of the lair age only 1 year for every 10 years that pass. If the dragon dies, these effects fade over the course of 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Days"} days.

Valindra Shadowmantle Legacy

Monsters Tomb of Annihilation

;{"diceNotation":"1d10","rollType":"roll","rollAction":"Rejuvenation"} days, regaining all its hit points and becoming active again. The new body appears within 5 feet of the phylactery. Spellcasting

the lich’s work. A lich encountered in its lair has a challenge rating of 22 (41,000 XP). Lair Actions On initiative count 20 (losing initiative ties), the lich can take a lair action to cause

Otherworldly Corrupter

Monsters The Book of Many Things

kill intruders. The villain’s challenge rating increases while the villain is in this lair: Otherworldly Corrupter. Challenge 18 (20,000 XP) Lair Actions On initiative count 20 (losing

":"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.

Arcturia

Monsters Waterdeep: Dungeon of the Mad Mage

":"1d10","rollType":"roll","rollAction":"Rejuvenation"} days, regaining all its hit points and becoming active again. The new body appears within 5 feet of the phylactery. Spellcasting. The lich is an 18th

recesses, emerging to destroy those who dare to disturb the lich’s work. A lich encountered in its lair has a challenge rating of 22 (41,000 XP). Lair Actions On initiative count 20 (losing

Lorthuun

Monsters Out of the Abyss

lair has a challenge rating of 14 (11,500 XP). Lair Actions When fighting inside its lair, a beholder can invoke the ambient magic to take lair actions. On initiative count 20 (losing initiative

before, harmless slime might coat a statue, and so on. These effects apply only to natural surfaces and to nonmagical objects that aren't on anyone's person. If the beholder dies, these effects fade over the course of 1d10;{"diceNotation":"1d10","rollType":"roll"} days.

Warforged Colossus

Monsters Eberron: Rising from the Last War

much damage on a successful one. A creature reduced to 0 hit points by this beam is disintegrated, leaving behind anything it was wearing or carrying.In the final days of the Last War, House Cannith

Mourning. The arcane cataclysm that engulfed Cyre destroyed most of the warforged colossi, causing them to collapse into lifeless heaps. Colossal Survivors. Some warforged colossi survived the Day of

Exethanter

Monsters Curse of Strahd

":"1d10","rollType":"roll","rollAction":"Rejuvenation"} days, regaining all its hit points and becoming active again. The new body appears within 5 feet of the phylactery. Spellcasting. Exethanter is an

its lair has a challenge rating of 22 (41,000 XP). Lair Actions On initiative count 20 (losing initiative ties), Exethanter can take a lair action to cause one of the following magical effects

Stalagma Steelshadow

Monsters Waterdeep: Dungeon of the Mad Mage

each of its turns, ending the effect on itself on a success. Change Shape. The dragon magically polymorphs into a humanoid or beast that has a challenge rating no higher than its own, or back into

60 feet per round and take no falling damage. Given days or longer to work, the dragon can make clouds and fog within its lair as solid as stone, forming structures and other objects as it wishes

Veiled Presence

Monsters The Book of Many Things

filled with clever defenses to disorient, weaken, and kill intruders. The villain’s challenge rating increases while the villain is in this lair: Veiled Presence. Challenge 22 (41,000 XP

members of the villain’s organization deal poison damage while within 3 miles of the lair, they ignore the target’s resistance to poison damage. If the villain dies, these effects fade over the course of 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Days"} days.Necrotic, Radiant

Fractine

Monsters Monstrous Compendium Vol. 1: Spelljammer Creatures

causing harm to anyone or anything. A fractine that doesn’t consume light or magical energy for ten days begins to flicker. A day later, it folds in on itself and self-destructs, leaving no trace

Adult Amethyst Dragon

Monsters Fizban's Treasury of Dragons

","rollType":"roll","rollAction":"Days"} days if the dragon dies. Upper Caves. The dragon most often sleeps in the largest upper chamber of the lair. The dragon’s hoard is divided between that

their lairs. The challenge rating of a legendary amethyst dragon increases by 1 when it’s encountered in its lair. Lair Actions On initiative count 20 (losing initiative ties), the dragon can

Ancient Amethyst Dragon

Monsters Fizban's Treasury of Dragons

. This property of the lair vanishes after 1d10;{"diceNotation":"1d10","rollType":"roll","rollAction":"Days"} days if the dragon dies. Upper Caves. The dragon most often sleeps in the largest upper

magical mobility, using flight and teleportation to navigate obstacles in their lairs. The challenge rating of a legendary amethyst dragon increases by 1 when it’s encountered in its lair. Lair

Fraz-Urb'luu Legacy

Monsters Out of the Abyss

hooks. Corkscrew towers loom above twisted domes and vast amphitheaters, just a few examples of the impossible architecture that fills the city. The challenge rating of Fraz-Urb’luu is 24

’luu dies, these effects fade over the course of 1d10;{"diceNotation":"1d10","rollType":"roll"} days. Madness of Fraz-Urb’luu If a creature goes mad in Fraz-Urb’luu’s lair or

Aurnozci

Monsters The Book of Many Things

chapter 20 for details about this realm. The challenge rating of Aurnozci is 23 (50,000 XP) when it’s encountered in its lair. Lair Actions On initiative count 20 (losing initiative ties

conditions. If Aurnozci dies, these effects fade over the course of 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Days"} days.Acid, Fire, Poison; Bludgeoning, Piercing, and Slashing from Nonmagical AttacksCold, Lightning

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