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Returning 35 results for 'before barrier diffusing ceiling reduces'.
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Monsters
Mordenkainen Presents: Monsters of the Multiverse
":"Arcane Ward"}. When the abjurer or a creature it can see within 30 feet of it takes damage, the abjurer magically creates a protective barrier around itself or the other creature. The barrier
reduces the damage to the protected creature by 26 (4d10 + 4);{"diceNotation":"4d10+4", "rollType":"roll", "rollAction":"Arcane Ward"}, to a minimum of 0, and then vanishes.Abjurers specialize in creating
Astral Dreadnought
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Monsters
Mordenkainen’s Tome of Foes
resembles a stone cave roughly 1,000 feet in diameter with a ceiling 100 feet high. Like a stomach, it contains the remains of the dreadnought's past meals. The dreadnought can't be harmed from within
damage reduces it to 0 hit points or it is incapacitated, the astral dreadnought swallows it. The swallowed target, along with everything it is wearing and carrying, appears in an unoccupied space on
Monsters
Mordenkainen Presents: Monsters of the Multiverse
diameter with a ceiling 100 feet high. Like a stomach, it contains the remains of past meals. The dreadnought can’t be harmed from within the demiplane. If the dreadnought dies, the demiplane
", "rollAction":"Bite", "rollDamageType":"force"} force damage. If the target is a Huge or smaller creature and this damage reduces it to 0 hit points or it is incapacitated, the dreadnought swallows it. The
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
a surface such as a ceiling with no way to remain there (for example, sufficient handholds), it falls at the end of this movement.
Regional Effects
The region containing a medusa’s lair is
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
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
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
40. Lynnorax’s Lair Ceiling. This room has a 40-foot-high, domed ceiling.
Dracolich. Lynnorax, an adult blue dracolich, faces the double door to the east and exhales lightning in that direction as
soon as it sees intruders.
Pillars. The four pillars that buttress the ceiling are carved out of black crystal and inscribed with arcane runes.
Lynnorax fights without fear, knowing that its
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
Dungeon Master’s Guide). 12a. Hell Hounds Ceiling. This hall has an arched, 30-foot-high ceiling.
Hounds. Five hell hounds patrol the hall. They obey the commands of fire giants and attack intruders on
sight.
Open Pits. Three 10-foot-square pits in the floor contain discarded scraps of metal.
The pits are 70 feet deep but partially filled with scrap metal that reduces their effective depth. The
Compendium
- Sources->Dungeons & Dragons->Storm King's Thunder
level. Characters who have a passive Wisdom (Perception) score of 14 or higher notice gaps in the ceiling, suggesting the presence of two hanging blocks of stone. Characters who search for traps and
the way takes 132 (24d10) bludgeoning damage and is knocked prone and pinned underneath the block, or crushed to a pulp if the damage reduces its hit points to 0. A creature pinned under a block is
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.
Compendium
- Sources->Dungeons & Dragons->Storm King's Thunder
). Using a torch or other open flame to thaw the ice around the lever (which takes at least 1 minute) reduces the DC to 20. Moving the lever to the up position causes the portcullis in area 5 to rise into
the ceiling, leaving an open doorway 30 feet high. Pushing the lever down causes the portcullis to lower back into place. It takes about 6 seconds to fall, allowing creatures underneath it time to get
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
swift and loud. Creatures within 20 feet of it are deafened by the roar unless a soundproof barrier or a silence spell blocks the noise. Any creature that starts its turn in the river and isn’t anchored
area 12 as it does elsewhere.
12a. South Water Collector The ceiling in this chamber forms a dome 20 feet higher than the floor around the cistern, which is 10 feet deep. Water pouring in from the
Monsters
Fizban's Treasury of Dragons
);{"diceNotation":"9d8", "rollType":"damage", "rollAction":"Essential Reduction", "rollDamageType":"necrotic"} necrotic damage. If this damage reduces the target to 0 hit points, it crumbles to dust.Decay and
from the ceiling, giving the place a warm, cozy glow. (The lanterns might be magical or maintained by minions.) The floors are covered with plush sand-colored carpets.
Hoard Chamber. A small chamber in
Monsters
Fizban's Treasury of Dragons
", "rollType":"damage", "rollAction":"Essential Reduction", "rollDamageType":"necrotic"} necrotic damage. If this damage reduces the target to 0 hit points, it crumbles to dust.Decay and despair are bound up in
state but are hung with the dragon’s collection of nautical paintings, mirrors, and sun-colored tapestries. Numerous gold-and-glass hanging lanterns are suspended from the ceiling, giving the
Compendium
- Sources->Dungeons & Dragons->Tomb of Annihilation
20. False Tomb Nested in the ceiling of the western tunnel is a stone block. A character who searches the tunnel spots the block with a successful DC 15 Wisdom (Perception) check. The block is part
of the room’s trap (see “Trap” below). This room smells of wine. On a checkerboard marble floor, a gilded coffin sparkles in sunlight streaming down from the chamber’s vaulted ceiling, which arches
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
-high, arched ceiling and contains three 1-foot-thick, magic curtains of translucent, shimmering green seawater. Each watery curtain stretches from floor to ceiling and wall to wall. Sound passing
no farther falls to the floor inside the curtain. Spell effects that would not reasonably pass through the watery curtain are stopped by the barrier as though it were a solid wall. For example, a magic
Compendium
- Sources->Dungeons & Dragons->Basic Rules (2014)
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
, the trap triggers. Anyone who inspects the beams can easily determine that they are merely wedged in place. As an action, a character can knock over a beam, causing the trap to trigger. The ceiling
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
. When the first character enters the room, Muiral becomes visible as he casts a wall of force spell, using the barrier to cut off that character from the rest of the party. He then engages the
across the ceiling.
East Statue. This statue depicts Lolth in her drow form, kissing a scourge as stone spiders crawl across her body.
3b. Nave Altar. An altar of pale gray stone carved to look like a
Compendium
- Sources->Dungeons & Dragons->Monster Manual
the death tyrant dies or moves its lair elsewhere, these effects end immediately. A cluster of tiny lights descended from a dark crevice in the ceiling. These motes cast an eerie glow on the great
damage reduces it to 0 Hit Points, it disintegrates into dust. Death Ray. Dexterity Saving Throw: DC 17. Failure: 55 (10d10) Necrotic damage. Success: Half damage. Failure or Success: The target dies if
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
this hall are as follows: Chandeliers. Radiant crystal chandeliers levitate near the ceiling.
Paintings. Paintings line the walls. They come in many sizes and have gilded frames.
The hall contains
released and appears in an unoccupied space as close to the shield as possible. On a failed save, the creature takes 31 (7d8) necrotic damage. If this damage reduces the trapped creature to 0 hit points
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
Compendium
- Sources->Dungeons & Dragons->Tomb of Annihilation
of iron to drop from the ceiling in the doorway, sealing off the east exit. Any creature in the doorway when the wall drops must make a DC 15 Dexterity saving throw. On a successful save, the
creature is pushed to one side of the barrier or the other (its choice). On a failed save, the creature is pinned under the wall, falls prone, and takes 44 (8d10) bludgeoning damage. A pinned creature is
Compendium
- Sources->Dungeons & Dragons->Tomb of Annihilation
running perpendicular to this one. Where the two halls meet, words have been scrawled on the ceiling in dried blood.
A secret door in the west wall slides open to reveal a dark tunnel leading to areas 26
and area 66. At the spot marked X on map 5.5, bloody words on the ceiling read, “AWAKEN NAPAKA!” 62B. Sloped Hall Large puddles of gray slime spread across the floor of this ten-foot-wide, gently
Compendium
- Sources->Dungeons & Dragons->Tales from the Yawning Portal->a2
downward. The floor has been cut into hundreds of shallow steps, but the walls and ceiling are still natural rock. About sixty feet down, a rushing stream spills from a narrow crack to the south and
first chamber of the Glitterhame proper is bisected by the stream and has a number of routes leading away from it. The descending fissure opens up abruptly into a very high cavern, its ceiling easily
Compendium
- Sources->Dungeons & Dragons->Candlekeep Mysteries
burst forth from the book like steam from a kettle, collecting along the ceiling until wisps of darkness outline a vague humanoid figure. Meanwhile, the scenes inside the book transform, creating an
. Noteworthy in the scene is the replica of the enormous sculpture hanging from the ceiling above the stacks (see area F1 for a description of the sculpture). Shemshime Medium undead
Armor Class 13
Compendium
- Sources->Dungeons & Dragons->Xanathar's Guide to Everything
and initiative count 10. Active Elements. The Path of Blades includes a set of whirling blades along the first 80 feet of the trap, crushing pillars that slam down from the ceiling to the floor before
rising back up to the ceiling in the next 50 feet, and a rune of fear in its final 30 feet. Whirling Blades (Initiative 20). The blades attack each creature in the first 80 feet of the hallway, with a
Compendium
- Sources->Dungeons & Dragons->Tomb of Annihilation
67. Hall of the Golden Mastodon A character who searches for traps in the tunnel approaching this room notices a block of stone lodged in the ceiling with a successful DC 20 Wisdom (Perception) check
this damage reduces the creature’s hit points to 0, the creature is crushed to a pulp; otherwise, it is shoved into the room. When the mastodon statue begins to revolve, all creatures present should
Compendium
- Sources->Dungeons & Dragons->Dungeon Master’s Guide
collapse an unstable section of ceiling. The trip wire is 3 inches off the ground and stretches between two weak supports that topple when the trip wire is pulled. The first creature that crosses the
trip wire causes the supports to topple and the unstable section of ceiling to collapse. Each creature beneath the unstable section of ceiling must succeed on a DC 13 Dexterity saving throw, taking 11
Compendium
- Sources->Dungeons & Dragons->Quests from the Infinite Staircase
level’s map. Security Mechanism. Between each pair of floors is a metal aperture with a barrier that prevents a creature from traveling to floors it isn’t authorized to access. If a creature doesn’t
Crew, maintenance workers, and technicians Blue Passengers Lighting Unless otherwise stated, the ship’s lighting—glowing, fluorescent panes set into the ceiling—remains functional but is turned off
Compendium
- Sources->Dungeons & Dragons->Monsters of the Multiverse
that enables planar travel, such as the plane shift spell. The demiplane resembles a stone cave roughly 1,000 feet in diameter with a ceiling 100 feet high. Like a stomach, it contains the remains of
damage. If the target is a Huge or smaller creature and this damage reduces it to 0 hit points or it is incapacitated, the dreadnought swallows it. The swallowed target, along with everything it is
Compendium
- Sources->Dungeons & Dragons->Icewind Dale: Rime of the Frostmaiden
he moves the lever to trigger a trap. Trap. When the lever is pulled, iron spikes spring out from the floor and ceiling to form barriers across each doorway. A creature in either opening must succeed
on a DC 12 Dexterity saving throw or take 7 (2d6) piercing damage from the spikes and be restrained until the spikes are retracted or the barrier is destroyed. The spikes can be retracted only by
Compendium
- Sources->Dungeons & Dragons->Vecna: Eve of Ruin
Shift spell. The demiplane resembles a stone cave roughly 1,000 feet in diameter with a ceiling 100 feet high. Like a stomach, it contains the remains of past meals. The dreadnought can’t be harmed from
Weapon Attack: +16 to hit, reach 10 ft., one target. Hit: 36 (5d10 + 9) force damage. If the target is a Huge or smaller creature and this damage reduces it to 0 hit points or it has the incapacitated
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
. Beholder Zombie Watcher. A beholder zombie floats near the 20-foot-high ceiling of this chamber, out of melee range. Painted in white around its central eye is a circle with ten equidistant spokes radiating
: Touching the arch with a nonmagical item made entirely of ferrous metal (such as an iron spike) reduces the item to powdered rust and opens the gate for 1 minute. Characters must be 9th level or
Compendium
- Sources->Dungeons & Dragons->D&D Beyond Basic Rules
collapse an unstable section of ceiling. The trip wire is 3 inches off the ground and stretches between two weak supports that topple when the trip wire is pulled. The first creature that crosses the
trip wire causes the supports to topple and the unstable section of ceiling to collapse. Each creature beneath the unstable section of ceiling must succeed on a DC 13 Dexterity saving throw, taking 11
Compendium
- Sources->Dungeons & Dragons->Baldur's Gate: Descent into Avernus
the ten-foot-high vaulted ceiling of this dry cellar, the walls of which are lined by a dozen barrels on wooden braces. Half the barrels have brass spigots tapped into them. The room also contains two
The Vanthampurs store animal carcasses and other fresh meat in this room. Hanging in the middle of the room from the 10-foot-high ceiling are six 3-foot-long chains, each ending in a hook. Flayed boar






