bad barrier diffusing ceiling reduced

Living Demiplane

Monsters Icewind Dale: Rime of the Frostmaiden

solid surface, such as a wall, ceiling, or floor. If it has no surface to attach to, the living spell is destroyed (see “Planar Destruction” below). Extradimensional Chamber. When the living spell

, target, or deal damage to the living spell; however, they can damage the room around them. Each 5-foot-square section of ceiling, wall, and floor in the chamber has AC 17, 50 hit points, immunity to poison

Nightwalker

Monsters Mordenkainen Presents: Monsters of the Multiverse

","rollAction":"Annihilating Aura","rollDamageType":"necrotic"} necrotic damage. Undead are immune to this aura. Life Eater. A creature dies if reduced to 0 hit points by the nightwalker and can’t

or its hit point maximum is reduced by an amount equal to the necrotic damage taken. This reduction lasts until the target finishes a long rest. The target dies if its hit point maximum is reduced to

Ashen Rider

Monsters Mythic Odysseys of Theros

spellcasting ability is Wisdom (spell save DC 18). The rider can innately cast the following spells, requiring no material components: At will: command, compelled duel 1/day each: banishment, blade barrier

and its mount have advantage on Dexterity saving throws. If the ashen rider is reduced to 0 hit points while riding its mount, the mount is reduced to 0 hit points as well.Multiattack. The ashen

Tempest Spirit

Monsters Bigby Presents: Glory of the Giants

failure, an affected creature’s hit point maximum is reduced by an amount equal to the necrotic damage taken. This reduction lasts until the creature finishes a long rest. The creature dies if its

hit point maximum is reduced to 0.A storm giant can escape death through a mystical ritual that transforms the giant into a semiconscious storm. However, if the giant performs the ritual in a place

Catoblepas

Monsters Mordenkainen Presents: Monsters of the Multiverse

necrotic damage. The target dies if reduced to 0 hit points by this ray.The catoblepas is as loathsome as the vile swamplands in which it lives, a conglomeration of bloated buffalo, dinosaur, warthog

the creature has such a feared reputation that stories about it are ingrained in the popular culture. Any rumor of a catoblepas taking up residence nearby is taken to be a bad omen, even if the rumor is

Draconian Mastermind

Monsters Fizban's Treasury of Dragons

Death Throes. When the draconian is reduced to 0 hit points, its magical essence lashes out as a ball of lightning at the closest creature within 30 feet of it before arcing out to up to two other

: dimension door, disguise self, sendingMagic Shield (3/Day). When the draconian is hit by an attack roll, it can create an invisible barrier of magical force around itself, granting it a +5 bonus to its

Bones of the Earth

Spells Elemental Evil Player's Companion

reduced to 0 hit points, a pillar crumbles into rubble, which creates an area of difficult terrain with a 10-foot radius that lasts until the rubble is cleared. Each 5-foot-diameter portion of the area

save. If a pillar is prevented from reaching its full height because of a ceiling or other obstacle, a creature on the pillar takes 6d6 bludgeoning damage and is restrained, pinched between the

Hierophant Medusa

Monsters The Book of Many Things

2/day: Mass Cure Wounds (cast at 8th level) 1/day each: Blade Barrier, Divination, Greater RestorationThe medusa can take 3 legendary actions, choosing from the options below. It can take only one

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

Adult Amethyst Dragon

Monsters Fizban's Treasury of Dragons

next turn. On a successful save, the creature takes half as much damage, and its speed isn’t reduced. Spellcasting (Psionics). The dragon casts one of the following spells, requiring no spell

the air is cool and slightly damp. Glowing Crystals. Large clusters of glowing amethyst crystals grow out from the walls and ceiling, casting dim light in a 30-foot radius. Chimneys. Two chimneys

Olhydra

Monsters Princes of the Apocalypse

hit points for each elemental she summons. Summoned elementals have maximum hit points, appear within 100 feet of Olhydra, and disappear if Olhydra is reduced to 0 hit points.Olhydra can take 3

— bad weather, strong tides, and increasing aggression from dangerous sea life. Violent downpours become frequent within 10 miles of the lair. A downpour occurs once every 2d12;{"diceNotation

30. Iron Barrier

Compendium - Sources->Dungeons & Dragons->Tomb of Annihilation

characters can use spells such as gaseous form and misty step to move past the iron sheet. Any character who examines the barrier discovers that it slides up into the ceiling. Coiled springs provide

30. Iron Barrier Ahead of you, the face of a snarling minotaur is etched into a sheet of iron that bisects the crawlway. Its eyes have been cut out, letting you see through the sheet, beyond which

Ancient Amethyst Dragon

Monsters Fizban's Treasury of Dragons

next turn. On a successful save, the creature takes half as much damage, and its speed isn’t reduced. Spellcasting (Psionics). The dragon casts one of the following spells, requiring no spell

ceiling, casting dim light in a 30-foot radius. Chimneys. Two chimneys connect the main caves to the three chambers above. Each chimney appears to continue up through the ceiling of the upper level and

Ancient Deep Dragon Legacy

Monsters Fizban's Treasury of Dragons

. Change Shape. The dragon magically transforms into any creature that is Medium or Small, while retaining its game statistics (other than its size). This transformation ends if the dragon is reduced to 0

or ambush visitors if the need arises. A well-cultivated lair abounds with Underdark fungi and plants, with the floor, walls, and ceiling covered in carpets of mold and moss, or featuring larger

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

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

Adult Deep Dragon Legacy

Monsters Fizban's Treasury of Dragons

. The dragon magically transforms into any creature that is Medium or Small, while retaining its game statistics (other than its size). This transformation ends if the dragon is reduced to 0 hit points

that allow them to escape or ambush visitors if the need arises. A well-cultivated lair abounds with Underdark fungi and plants, with the floor, walls, and ceiling covered in carpets of mold and moss

Random Obstacles

Compendium - Sources->Dungeons & Dragons->Dungeon Master’s Guide (2014)

barrier to many characters but easily navigated by water-breathing creatures. Obstacles can affect more than one room. A chasm might run through several passages and chambers, or send cracks through

Blade barrier blocks passage 4–8 Cave-in 9–12 Chasm 1d4 × 10 ft. wide and 2d6 × 10 ft. deep, possibly connected to other levels of the dungeon 13–14 Flooding leaves 2d10 ft. of water in the area; create

6. Meat Locker

Compendium - Sources->Dungeons & Dragons->Hoard of the Dragon Queen

. It is made from hundreds of heavy leather strips, each about the width of a human hand. The strips are fixed to the ceiling and are long enough to drag on the floor. The curtain extends from wall to

the dragon eggs hatch and the ravenous hatchlings emerge. The carcasses range from very fresh to several months old. The meat is only cold, not frozen, so the older items are slowly going bad. The smell

6. Meat Locker

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

. It is made from hundreds of heavy leather strips, each about the width of a human hand. The strips are fixed to the ceiling and are long enough to drag on the floor. The curtain extends from wall to

the dragon eggs hatch and the ravenous hatchlings emerge. The carcasses range from very fresh to several months old. The meat is only cold, not frozen, so the older items are slowly going bad. The

X34. Wizard's Bedchamber

Compendium - Sources->Dungeons & Dragons->Curse of Strahd

furnishings have been reduced to dust-covered heaps. Cobwebs cover arcane sigils carved into the walls. The ceiling here is 10 feet high. The sigils that cover the walls were once wards designed to

Delerium Chip Legacy

Equipment

, delerium shatters and crumbles into worthless ash when reduced to zero hit points. However, delerium geodes release a random arcane anomaly (see Dungeons of Drakkenheim) when destroyed. Delerium

or a ceiling), which allows them to move as if they were climbing. Unattended objects float around randomly. 2 The nearest creature is affected by a hideous laughter spell (Save DC 15) but

Delerium Geode Legacy

Equipment

, delerium shatters and crumbles into worthless ash when reduced to zero hit points. However, delerium geodes release a random arcane anomaly (see Dungeons of Drakkenheim) when destroyed. Delerium

or a ceiling), which allows them to move as if they were climbing. Unattended objects float around randomly. 2 The nearest creature is affected by a hideous laughter spell (Save DC 15) but

Delerium Massive Cluster Legacy

Equipment

, delerium shatters and crumbles into worthless ash when reduced to zero hit points. However, delerium geodes release a random arcane anomaly (see Dungeons of Drakkenheim) when destroyed. Delerium

or a ceiling), which allows them to move as if they were climbing. Unattended objects float around randomly. 2 The nearest creature is affected by a hideous laughter spell (Save DC 15) but

10. Chuth's Lair

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

comparison to what the cult claimed for Tiamat and what the dragon possesses in his other lairs. The vaulted ceiling is 60 feet high here. If Chuth is in the stronghold, he is initially found here only

of his total hoard, Chuth has no interest in dying to protect it. He flees when he is reduced to half his hit points or fewer. Neronvain fights until similarly reduced, then makes his way to Chuth

10. Chuth's Lair

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

comparison to what the cult claimed for Tiamat and what the dragon possesses in his other lairs. The vaulted ceiling is 60 feet high here. If Chuth is in the stronghold, he is initially found here only

of his total hoard, Chuth has no interest in dying to protect it. He flees when he is reduced to half his hit points or fewer. Neronvain fights until similarly reduced, then makes his way to Chuth

Delerium Crystal Legacy

Equipment

, delerium shatters and crumbles into worthless ash when reduced to zero hit points. However, delerium geodes release a random arcane anomaly (see Dungeons of Drakkenheim) when destroyed. Delerium

or a ceiling), which allows them to move as if they were climbing. Unattended objects float around randomly. 2 The nearest creature is affected by a hideous laughter spell (Save DC 15) but

Delerium Shard Legacy

Equipment

, delerium shatters and crumbles into worthless ash when reduced to zero hit points. However, delerium geodes release a random arcane anomaly (see Dungeons of Drakkenheim) when destroyed. Delerium

or a ceiling), which allows them to move as if they were climbing. Unattended objects float around randomly. 2 The nearest creature is affected by a hideous laughter spell (Save DC 15) but

Sample Traps

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

above the trip wire is in bad repair, and anyone who can see it can tell that it's in danger of collapse. When the trap is triggered, the unstable ceiling collapses. Any creature in the area beneath the

supports keeping an unstable section of a ceiling in place. The trip wire is 3 inches off the ground and stretches between two support beams. The DC to spot the trip wire is 10. A successful DC 15

Strahd Dies

Compendium - Sources->Dungeons & Dragons->Curse of Strahd

Strahd Dies When Strahd is reduced to 0 hit points, he turns to mist and retreats to his coffin (see the Misty Escape feature in the vampire stat block). The vampire must be in his resting place to

Ravenloft trembles with fury, shaking dust from the ceiling of the vampire’s tomb. The shudders abate as Strahd’s burning hatred melts away, replaced at last with relief. The dark orbs of his eyes wither

14. Drow Rafts

Compendium - Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage

14. Drow Rafts Darkmantles. Stalactites hang from the 30-foot-high ceiling. Two darkmantles disguised as stalactites remain motionless until they attack. Rafts. Leaning against the west wall are

, they flee if reduced to half their hit points or fewer. The drow use the rafts to ply the River of the Depths. Each raft is built to carry six Medium humanoids and their gear, though as many as twelve people can fit onto a raft if push comes to shove.

Living Spells

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

. Unfettered. The living spell can move through any barrier, even a wall of magical force. Unusual Nature. The living spell doesn’t require air, food, drink, or sleep. Actions Force Blade. Melee

move through a space as narrow as 1 inch wide without squeezing. The living spell can’t detach from a solid surface, such as a wall, ceiling, or floor. If it has no surface to attach to, the living

37. Weapon of Mass Disintegration

Compendium - Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage

surface is covered with gleaming mithral plates. Each alcove is brightly lit by the yellow glow of a small crystal dome embedded in its 8-foot-high ceiling. Key Shapes. Set into the mithral-plated

. A detect magic spell reveals a strong aura of abjuration magic engulfing each alcove, which is just spacious enough to accommodate a single Medium creature. The crystal dome in the ceiling is the

M5. Engine Room

Compendium - Sources->Dungeons & Dragons->Lost Laboratory of Kwalish

throughout the area, around which a prisoner work gang toils in the sweltering heat. Smooth metallic columns rise to the ceiling, with open hatches set into their sides at ground level. Haggard prisoners

desperate to escape the monastery before its engines fail. They can steal a skiff and follow the marked trails out of the Barrier Peaks if left to their own devices.

K27. King's Hall

Compendium - Sources->Dungeons & Dragons->Curse of Strahd

K27. King’s Hall This twenty-foot-high hall has a dark, vaulted ceiling draped with cobwebs. A low moan seems to travel the length of the corridor as it rises and falls, intoning sadness and despair

. The moaning is only the wind. Characters who examine the ceiling can, with a successful DC 20 Wisdom (Perception) check, spot pulleys and a rope that run the full length of the corridor along the

2E. Rotted Floor

Compendium - Sources->Dungeons & Dragons->Hoard of the Dragon Queen

2E. Rotted Floor The second level of the northwest tower is in bad shape. There are large holes where the floorboards have completely rotted away or fallen into the muck below, and the floorboards

to the third level. Characters are safe from falling as long as they stay on the landing or the steps. A trapdoor closes off the top of the stairs at the ceiling. The door is latched with a simple

Delerium Fragment Legacy

Equipment

, delerium shatters and crumbles into worthless ash when reduced to zero hit points. However, delerium geodes release a random arcane anomaly (see Dungeons of Drakkenheim) when destroyed. Delerium

or a ceiling), which allows them to move as if they were climbing. Unattended objects float around randomly. 2 The nearest creature is affected by a hideous laughter spell (Save DC 15) but

D&D Beyond

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