before being drops continue rounds

Aerisi Kalinoth

Monsters Princes of the Apocalypse

, without using components or a spell slot. She can’t cast the same spell two rounds in a row, although she can continue to concentrate on a spell she previously cast using a lair action. Aerisi can

Fey Ancestry. Aerisi has advantage on saving throws against being charmed, and magic can’t put her to sleep. Howling Defeat. When Aerisi drops to 0 hit points, her body disappears in a howling

Vanifer

Monsters Princes of the Apocalypse

action to cast one of her spells, up to 3rd level, without using components or a spell slot. She can’t cast the same spell two rounds in a row, although she can continue to concentrate on a

Funeral Pyre. When Vanifer drops to 0 hit points, her body is consumed in a flash of fire and smoke. Anything she was wearing or carrying is left behind among ashes. Legendary Resistance (2/Day). If

Gar Shatterkeel

Monsters Princes of the Apocalypse

, without using components or a spell slot. He can’t cast the same spell two rounds in a row, but he can continue to concentrate on a spell he previously cast using a lair action. He can take no other

stand and move on liquid surfaces as if they were solid ground. Watery Fall. When Gar drops to 0 hit points, his body collapses into a pool of inky water that rapidly disperses. Anything he was wearing

Tixie Tockworth

Monsters Keys from the Golden Vault

to function if Tockworth drops to 0 hit points. Any damage Tockworth takes is subtracted from the force field’s hit points first. Each time the force field regains hit points, the following

Construct. If she’s allowed to continue her work, she will achieve this apotheosis in a matter of weeks, after which her creature type changes to Construct. She also gains immunity to poison damage

Frostmourn

Monsters Bigby Presents: Glory of the Giants

target to 0 hit points, the target drops to 1 hit point instead and has the petrified condition, turning into a frozen statue. If the statue takes bludgeoning damage, it shatters, killing the frozen

wound that seeps frosty vapor or vibrant, purple veins showing the ravages of poison. It can momentarily dissolve its body into a swirling blizzard to avoid harm, reforming at a distance to continue its assault.Cold, PoisonFire

Spawn of Kyuss

Monsters Mordenkainen Presents: Monsters of the Multiverse

worm infesting it (maximum of 10d6);{"diceNotation":"10d6","rollType":"damage","rollAction":"Burrowing Worm (Maximum)","rollDamageType":"necrotic"}, and if it drops to 0 hit points, it dies and then

Orcus who plundered corpses from necropolises to create the first spawn of Kyuss. Even centuries after Kyuss’s death, his malign disciples continue performing the horrific rites he perfected

Demilich (Variant) Legacy

Monsters Monster Manual (2014)

exist. If the demilich drops to 0 hit points, it is destroyed and turns to powder, leaving behind its gems. Crushing a gem releases any soul trapped within, at which point the target’s body re

souls of the insolent intruders to his tomb, magically transferring them to his phylactery. Liches who follow Acererak’s path believe that by becoming free of their bodies, they can continue

Suffocating Legacy

Rules

rounds equal to its Constitution modifier (minimum of 1 round). At the start of its next turn, it drops to 0 hit points and is dying, and it cannot regain hit points or be stabilized until it can breathe again.

Summon Greater Demon

Spells Xanathar's Guide to Everything

demon appears in an unoccupied space you can see within range, and the demon disappears when it drops to 0 hit points or when the spell ends. Roll initiative for the demon, which has its own turns

rounds if it still has hit points. As part of casting the spell, you can form a circle on the ground with the blood used as a material component. The circle is large enough to encompass your space

Vampire Warrior Legacy

Monsters Monster Manual (2014)

throw, it can choose to succeed instead. Misty Escape. When it drops to 0 hit points outside its resting place, the vampire transforms into a cloud of mist (as in the Shapechanger trait) instead of

the Night"} rounds, acting as allies of the vampire and obeying its spoken commands. The beasts remain for 1 hour, until the vampire dies, or until the vampire dismisses them as a bonus action.The

Obzedat Ghost

Monsters Guildmasters’ Guide to Ravnica

hit. On a success, Fautomni drops to 1 hit point instead. Karlov: Unnatural Vigor. When Karlov regains hit points, he has advantage on attack rolls he makes on his next turn. Vuliev: Teleportation

let go of the fortunes they amassed in life. Addicted to power and prestige, these patriarchs continue to dominate the guild and accumulate even larger fortunes. Mostly Unanimous. The ghosts of the

Vampire Legacy

Monsters Basic Rules (2014)

). If the vampire fails a saving throw, it can choose to succeed instead. Misty Escape. When it drops to 0 hit points outside its resting place, the vampire transforms into a cloud of mist (as in the

;wolves instead. The called creatures arrive in 1d4;{"diceNotation":"1d4","rollType":"roll","rollAction":"Children of the Night"} rounds, acting as allies of the vampire and obeying its spoken commands

Vampire Spellcaster Legacy

Monsters Monster Manual (2014)

throw, it can choose to succeed instead. Misty Escape. When it drops to 0 hit points outside its resting place, the vampire transforms into a cloud of mist (as in the Shapechanger trait) instead of

":"3d6","rollType":"roll","rollAction":"Children of the Night"} wolf;wolves instead. The called creatures arrive in 1d4;{"diceNotation":"1d4","rollType":"roll","rollAction":"Children of the Night"} rounds

Yan-C-Bin

Monsters Princes of the Apocalypse

one of the following effects; he can’t use the same effect two rounds in a row: Yan-C-Bin drops the temperature of the air, covering all surfaces with ice. This effect is identical to the

feet of him. The target must make a DC 21 Constitution saving throw. On a failed save, the target drops to 0 hit points and is dying. On a successful save, the target can’t breathe or speak

Geryon (Summoner Variant) Legacy

Monsters Mordenkainen’s Tome of Foes

become poisoned until it finishes a short or long rest. The target's hit point maximum is reduced by an amount equal to half the poison damage it takes. If its hit point maximum drops to 0, it dies

initiative ties), Geryon can take a lair action to cause one of the following effects; he can't use the same effect two rounds in a row: Geryon causes a blast of cold to burst from the ground at a point

Gar Shatterkeel (Noncore)

Monsters Locathah Rising

*Circle spells don’t count against spells prepared. Water Walk. Gar can stand and move on liquid surfaces as if they were solid ground. Watery Fall. When Gar drops to 0 hit points, his body

action to cause one of the following effects; Gar can’t use the same effect two rounds in a row. Gar may teleport anywhere within the coral mountain, bringing up to five willing creatures with

Geryon Legacy

Monsters Mordenkainen’s Tome of Foes

become poisoned until it finishes a short or long rest. The target's hit point maximum is reduced by an amount equal to half the poison damage it takes. If its hit point maximum drops to 0, it dies

initiative count 20 (losing initiative ties), Geryon can take a lair action to cause one of the following effects; he can't use the same effect two rounds in a row: Geryon causes a blast of cold to burst

Valindra Shadowmantle Legacy

Monsters Tomb of Annihilation

Valindra drops to 30 hit points or fewer, or if dispel magic is cast on her.Valindra can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time

one of the following magical effects; the lich can’t use the same effect two rounds in a row: The lich rolls a d8 and regains a spell slot of that level or lower. If it has no spent spell

Zariel

Monsters Mordenkainen Presents: Monsters of the Multiverse

allows her mortal followers to live out their lives provided they continue to hone their talents to increase their value. As a result, Zariel’s servants are universally effective, disciplined, and

’t take the same lair action two rounds in a row: Fireball. Zariel casts the fireball spell. Infernal Illusions. Zariel casts the major image spell four times, targeting different areas with it

Unspeakable Horror (Malleable Mass)

Monsters Van Richten’s Guide to Ravenloft

horrors might continue to haunt the misty netherworld between the Domains of Dread, or they might slink forth into other realms to slake unnameable hungers. Customizing a Horror An unspeakable horror

can’t persist for long outside the Mists: after 1d4;{"diceNotation":"1d4","rollType":"roll","rollAction":"Mist Horror"} rounds outside the Mists, they lose cohesion and collapse back into

Unspeakable Horror

Monsters Van Richten’s Guide to Ravenloft

into unique, misshapen bodies untethered from the laws of reason or reality. Such unspeakable horrors might continue to haunt the misty netherworld between the Domains of Dread, or they might slink

","rollAction":"Mist Horror"} rounds outside the Mists, they lose cohesion and collapse back into harmless vapor. Body Composition d4;{"diceNotation":"1d4","rollType":"roll","rollAction":"Body

Unspeakable Horror (Aberrant Armor)

Monsters Van Richten’s Guide to Ravenloft

unique, misshapen bodies untethered from the laws of reason or reality. Such unspeakable horrors might continue to haunt the misty netherworld between the Domains of Dread, or they might slink forth into

":"Mist Horror"} rounds outside the Mists, they lose cohesion and collapse back into harmless vapor. Body Composition d4;{"diceNotation":"1d4","rollType":"roll","rollAction":"Body Composition

Suffocating

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

a number of rounds equal to its Constitution modifier (minimum of 1 round). At the start of its next turn, it drops to 0 hit points and is dying, and it can't regain hit points or be stabilized until

it can breathe again. For example, a creature with a Constitution of 14 can hold its breath for 3 minutes. If it starts suffocating, it has 2 rounds to reach air before it drops to 0 hit points.

Baernaloth

Monsters Planescape: Adventures in the Multiverse

baernaloth can take one of the following lair actions; the baernaloth can’t take the same lair action two rounds in a row: Consume Suffering. Until initiative count 20 on the next round, when a creature

in the baernaloth’s lair other than the baernaloth takes necrotic or psychic damage or drops to 0 hit points, the baernaloth regains 10 (3d6);{"diceNotation":"3d6", "rollType":"heal

Zorak Lightdrinker

Monsters Waterdeep: Dungeon of the Mad Mage

to succeed instead. Misty Escape. When he drops to 0 hit points outside his resting place, Zorak transforms into a cloud of mist (as in the Shapechanger trait) instead of falling unconscious

in 1d4;{"diceNotation":"1d4","rollType":"roll","rollAction":"Children of the Night"} rounds, acting as allies of Zorak and obeying his spoken commands. The beasts remain for 1 hour, until Zorak dies

Juiblex

Monsters Mordenkainen Presents: Monsters of the Multiverse

weapon the target is carrying or wearing takes a permanent −1 penalty to damage rolls. The penalty worsens each time a target is subjected to this effect. If the penalty on an object drops to

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

Suffocating

Compendium - Sources->Dungeons & Dragons->Player's Handbook (2014)

a number of rounds equal to its Constitution modifier (minimum of 1 round). At the start of its next turn, it drops to 0 hit points and is dying, and it can't regain hit points or be stabilized until

it can breathe again. For example, a creature with a Constitution of 14 can hold its breath for 3 minutes. If it starts suffocating, it has 2 rounds to reach air before it drops to 0 hit points.

Unspeakable Horror (Loathsome Limbs)

Monsters Van Richten’s Guide to Ravenloft

eddies in the Mists sometimes gather such evils, forcing them into unique, misshapen bodies untethered from the laws of reason or reality. Such unspeakable horrors might continue to haunt the misty

Mists: after 1d4;{"diceNotation":"1d4","rollType":"roll","rollAction":"Mist Horror"} rounds outside the Mists, they lose cohesion and collapse back into harmless vapor. Body Composition d4

Unspeakable Horror (Oozing Organs)

Monsters Van Richten’s Guide to Ravenloft

, forcing them into unique, misshapen bodies untethered from the laws of reason or reality. Such unspeakable horrors might continue to haunt the misty netherworld between the Domains of Dread, or they

":"roll","rollAction":"Mist Horror"} rounds outside the Mists, they lose cohesion and collapse back into harmless vapor. Body Composition d4;{"diceNotation":"1d4","rollType":"roll","rollAction

Suffocating (p. 183)

Compendium - Sources->Dungeons & Dragons->Sage Advice & Errata

Suffocating (p. 183) The second paragraph now reads, “When a creature runs out of breath or is choking, it can survive for a number of rounds equal to its Constitution modifier (minimum of 1 round

). At the start of its next turn, it drops to 0 hit points and is dying, and it can’t regain hit points or be stabilized until it can breathe again.”

Performing the Ritual

Compendium - Sources->Dungeons & Dragons->Tyranny of Dragons

Performing the Ritual To successfully bring Tiamat from the Nine Hells into the world, the Red Wizards must successfully focus the summoning ritual for 10 rounds after the adventurers enter the

than five Red Wizards perform the ritual for 2 rounds in succession, the portal collapses and the count of successfully focused rounds is reset to 0. The Mask of the Dragon Queen is essential to the

Performing the Ritual

Compendium - Sources->Dungeons & Dragons->Rise of Tiamat

Performing the Ritual To successfully bring Tiamat from the Nine Hells into the world, the Red Wizards must successfully focus the summoning ritual for 10 rounds after the adventurers enter the

than five Red Wizards perform the ritual for 2 rounds in succession, the portal collapses and the count of successfully focused rounds is reset to 0. The Mask of the Dragon Queen is essential to the

Juiblex Legacy

Monsters Out of the Abyss

a permanent −1 penalty to damage rolls. The penalty worsens each time a target is subjected to this effect. If the penalty on an object drops to −5, the object is destroyed.Juiblex can

initiative ties), Juiblex can take a lair action to cause one of the following effects; it can’t use the same effect two rounds in a row: Juiblex slimes a square area of ground it can see within the

Keresta Delvingstone

Monsters Waterdeep: Dungeon of the Mad Mage

can choose to succeed instead. Misty Escape. When she drops to 0 hit points outside her resting place, Keresta transforms into a cloud of mist (as in the Shapechanger trait) instead of falling

centipede;giant centipedes. The called creatures arrive in 1d4;{"diceNotation":"1d4","rollType":"roll","rollAction":"Children of the Night"} rounds, acting as allies of Keresta and obeying her spoken

Nafas

Monsters Quests from the Infinite Staircase

Nafas drops to 0 hit points, his body disintegrates into a whirl of multiversal dust that surrounds one creature responsible for his demise. That creature then hears Nafas’s last wish: for the

friendly creatures. Lair Actions On initiative count 20 (losing initiative ties), Nafas can take one of the following lair actions; he can’t take the same lair action two rounds in a row

D&D Beyond

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