barrier buildings 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

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

Blue Greatwyrm

Monsters Fizban's Treasury of Dragons

Chromatic Awakening (Recharges after a Short or Long Rest). If the greatwyrm would be reduced to 0 hit points, its current hit point total instead resets to 425 hit points, it recharges its Breath

city to the ground, destroying buildings and defenders alike.LightningIf the greatwyrm’s Chromatic Awakening trait has activated in the last hour, it can use the options below as legendary

Red Greatwyrm

Monsters Fizban's Treasury of Dragons

Chromatic Awakening (Recharges after a Short or Long Rest). If the greatwyrm would be reduced to 0 hit points, its current hit point total instead resets to 425 hit points, it recharges its Breath

the ground, destroying buildings and defenders alike.FireIf the greatwyrm’s Chromatic Awakening trait has activated in the last hour, it can use the options below as legendary actions. Bite. The

White Greatwyrm

Monsters Fizban's Treasury of Dragons

Chromatic Awakening (Recharges after a Short or Long Rest). If the greatwyrm would be reduced to 0 hit points, its current hit point total instead resets to 425 hit points, it recharges its Breath

the ground, destroying buildings and defenders alike.ColdIf the greatwyrm’s Chromatic Awakening trait has activated in the last hour, it can use the options below as legendary actions. Bite. The

Green Greatwyrm

Monsters Fizban's Treasury of Dragons

Chromatic Awakening (Recharges after a Short or Long Rest). If the greatwyrm would be reduced to 0 hit points, its current hit point total instead resets to 425 hit points, it recharges its Breath

to the ground, destroying buildings and defenders alike.PoisonIf the greatwyrm’s Chromatic Awakening trait has activated in the last hour, it can use the options below as legendary actions

Black Greatwyrm

Monsters Fizban's Treasury of Dragons

Chromatic Awakening (Recharges after a Short or Long Rest). If the greatwyrm would be reduced to 0 hit points, its current hit point total instead resets to 425 hit points, it recharges its Breath

the ground, destroying buildings and defenders alike.AcidIf the greatwyrm’s Chromatic Awakening trait has activated in the last hour, it can use the options below as legendary actions. Bite. 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

Ogrémoch

Monsters Princes of the Apocalypse

disappear if Ogrémoch is reduced to 0 hit points.Ogrémoch can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at

creatures standing on the ground in that radius must succeed on a DC 23 Dexterity saving throw or fall prone. Create Gargoyle (Costs 3 Actions). Ogrémoch’s hit points are reduced by 50 as he

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

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

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

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

Delerium Chip Legacy

Equipment

tones, and glow brightly at night or when exposed to magic. Deposits are found throughout Drakkenheim, often fused into stone streets and buildings like crystalline moss. A typical delerium fragment is

, 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

Delerium Geode Legacy

Equipment

tones, and glow brightly at night or when exposed to magic. Deposits are found throughout Drakkenheim, often fused into stone streets and buildings like crystalline moss. A typical delerium fragment is

, 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

Delerium Massive Cluster Legacy

Equipment

tones, and glow brightly at night or when exposed to magic. Deposits are found throughout Drakkenheim, often fused into stone streets and buildings like crystalline moss. A typical delerium fragment is

, 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

Arrival in Janya

Compendium - Sources->Dungeons & Dragons->Journeys through the Radiant Citadel

Arrival in Janya As the characters near the seafloor, a pearlescent haze cuts through the darkness. Below they see a shimmering dome of light, a great magical barrier that shelters the city below. As

covered with designs marked by bioluminescent barnacles. People slip through open corridors between buildings, swimming high above the volcanic rock and coral of the seafloor below. As the

18. Abandoned Cavern

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

18. Abandoned Cavern This 30-foot-high cavern contains part of the ancient settlement of Stromkuhldur. Crumbling, single-story buildings stand empty, their roofs caved in and their insides picked clean. Sections of the cavern ceiling show signs of collapse, with rocks scattered across the floor.

Delerium Crystal Legacy

Equipment

tones, and glow brightly at night or when exposed to magic. Deposits are found throughout Drakkenheim, often fused into stone streets and buildings like crystalline moss. A typical delerium fragment is

, 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

Delerium Shard Legacy

Equipment

tones, and glow brightly at night or when exposed to magic. Deposits are found throughout Drakkenheim, often fused into stone streets and buildings like crystalline moss. A typical delerium fragment is

, 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

18. Abandoned Cavern

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

18. Abandoned Cavern This 30-foot-high cavern contains part of the ancient settlement of Stromkuhldur. Crumbling, single-story buildings stand empty, their roofs caved in and their insides picked clean. Sections of the cavern ceiling show signs of collapse, with rocks scattered across the floor.

Arrival in Janya

Compendium - Sources->Dungeons & Dragons->Journeys through the Radiant Citadel

Arrival in Janya As the characters near the seafloor, a pearlescent haze cuts through the darkness. Below they see a shimmering dome of light, a great magical barrier that shelters the city below. As

covered with designs marked by bioluminescent barnacles. People slip through open corridors between buildings, swimming high above the volcanic rock and coral of the seafloor below. As the

Arrival in Janya

Compendium - Sources->Dungeons & Dragons->Journeys through the Radiant Citadel

Arrival in Janya As the characters near the seafloor, a pearlescent haze cuts through the darkness. Below they see a shimmering dome of light, a great magical barrier that shelters the city below. As

covered with designs marked by bioluminescent barnacles. People slip through open corridors between buildings, swimming high above the volcanic rock and coral of the seafloor below. As the

18. Abandoned Cavern

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

18. Abandoned Cavern This 30-foot-high cavern contains part of the ancient settlement of Stromkuhldur. Crumbling, single-story buildings stand empty, their roofs caved in and their insides picked clean. Sections of the cavern ceiling show signs of collapse, with rocks scattered across the floor.

Delerium Fragment Legacy

Equipment

tones, and glow brightly at night or when exposed to magic. Deposits are found throughout Drakkenheim, often fused into stone streets and buildings like crystalline moss. A typical delerium fragment is

, 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

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

13. Starry Cavern

Compendium - Sources->Dungeons & Dragons->Lost Mine of Phandelver

, into which a flight of stairs has been cut. Passages lead out of this area to the north, south, and west. The damaged buildings are described in areas 14 and area 15. Minerals in the ceiling are

the mines. Glittering minerals in the ceiling of this large cavern catch the light and send it back to create the impression of a starry night sky. Dozens of skeletons—many crushed under fallen debris

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