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Returning 35 results for 'before being diameter ceiling returns'.
Adult Blue Dragon
Legacy
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Monsters
Basic Rules (2014)
that make up its lair if that lair is invaded. The dragon then burrows out, leaving its attackers to be crushed and suffocated. When it returns later, it collects its possessions — along with the
effect two rounds in a row:
Part of the ceiling collapses above one creature that the dragon can see within 120 feet of it. The creature must succeed on a DC 15 Dexterity saving throw or take 10
Ancient Blue Dragon
Legacy
This doesn't reflect the latest rules and lore.
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Monsters
Basic Rules (2014)
that make up its lair if that lair is invaded. The dragon then burrows out, leaving its attackers to be crushed and suffocated. When it returns later, it collects its possessions — along with
same effect two rounds in a row:
Part of the ceiling collapses above one creature that the dragon can see within 120 feet of it. The creature must succeed on a DC 15 Dexterity saving throw or take 10
Spells
Elemental Evil Player's Companion
You cause up to six pillars of stone to burst from places on the ground that you can see within range. Each pillar is a cylinder that has a diameter of 5 feet and a height of up to 30 feet. The
ground where a pillar appears must be wide enough for its diameter, and you can target the ground under a creature if that creature is Medium or smaller. Each pillar has AC 5 and 30 hit points. When
Astral Dreadnought
Legacy
This doesn't reflect the latest rules and lore.
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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
Monsters
Strixhaven: A Curriculum of Chaos
creature encounters a solid object (such as a ceiling) in this fall, it strikes the object just as it would during a downward fall. If the creature reaches the top of the area without striking anything
, it hovers there until the start of the archaic’s next turn, at which time gravity returns to normal and the creature falls.
Spellcasting. The archaic casts one of the following spells
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
, this creature can move up to 20 feet through spaces no more than an inch in diameter. It must end this movement in a space that can accommodate its full size. Otherwise, it takes 5 force damage and
Monsters
The Wild Beyond the Witchlight
feet. If the brigganock dies, its soul light fades away.
Tunneler. Using a pickaxe or similar tool, a brigganock can burrow through solid rock at a speed of 5 feet, leaving a 6-inch-diameter tunnel
size and never turn down a good meal.Move Soul Light. The brigganock moves its soul light up to 30 feet in any direction to an unoccupied space it can see. At the end of the current turn, the light returns to the brigganock.
Monsters
Storm King's Thunder
that lair is invaded. The dragon then burrows out, leaving its attackers to be crushed and suffocated. When it returns later, it collects its possessions — along with the wealth of the dead
row:
Part of the ceiling collapses above one creature that the dragon can see within 120 feet of it. The creature must succeed on a DC 15 Dexterity saving throw or take 10 (3d6);{"diceNotation":"3d6
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
Monsters
Fizban's Treasury of Dragons
than a foot in diameter that extend six to ten feet from the interior stone surfaces of the lair. These crystals resonate with the dragon’s presence, and glow with a soft inner light. The older
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
Monsters
Fizban's Treasury of Dragons
split open to show their contents and clusters of crystal points more than a foot in diameter that extend six to ten feet from the interior stone surfaces of the lair. These crystals resonate with the
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
Monsters
The Book of Many Things
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
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->Curse of Strahd
Q33. Collapsed Ceiling The roof over this part of the mansion has collapsed, creating a twenty-foot-diameter gaping hole with broken rafters bisecting it. Dark storm clouds roll across the sky
overhead. The floor is piled with rocks, broken tiles, shattered beams, and other debris. Beneath the rubble lie a sagging floor and puddles of rainwater. The ceiling here is 20 feet high, and the rubble is
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
21. Night and Day Timekeeper. Four pillars support the 20-foot-high ceiling. An iron ring 20 feet in diameter is suspended from iron brackets affixed to the tops of the pillars so that it hangs
parallel to the floor 20 feet below. Nested inside this ring is a circular iron disk of slightly smaller diameter with a symbol of the sun embossed on one side and a symbol of the moon on the opposite side
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
29. Foggy Hall The floor of this room is heavily obscured by a 2-foot-high blanket of thick fog. It swirls lazily around the base of a 20-foot-diameter, cylindrical stone column that supports the 20-foot-high ceiling. Rusty iron torch sconces mounted to this central column stand empty.
Compendium
- Sources->Dungeons & Dragons->Rrakkma
Area Information Dimensions & Terrain This oddly circular chamber is forty feet in diameter one way and fifty feet in diameter the other. Other Features Statues, carved from a pure white marble
held high above its head to support the ceiling, forty feet above. A pair of fist-sized black crystals is fitted to the statue’s eyes. The perimeter statues, six in all, appear to resemble naked humans
Compendium
- Sources->Dungeons & Dragons->Tales from the Yawning Portal->a7
no exit. The floor returns to a closed position in 10 minutes, sealing any victim inside the pit until another creature triggers the floor trap again. Crawl Space. The ceiling route is a crawl space
upward or downward has any results. Moving them up opens a small trapdoor in the center of the ceiling 10 feet above. Pushing them simultaneously down opens the entire floor to a 100-foot-deep pit with
Compendium
- Sources->Dungeons & Dragons->Netheril’s Fall: Tales of Terror, Treasure, and Time Travel
DC 16), except that it is permanent and typically covers an area that is 60 feet in diameter and 60 feet high. Every 1d4 rounds, the effect is suppressed for 1d4 rounds and normal gravity returns, causing creatures and objects to fall.
Compendium
- Sources->Dungeons & Dragons->Xanathar's Guide to Everything
you can see within range. Each pillar is a cylinder that has a diameter of 5 feet and a height of up to 30 feet. The ground where a pillar appears must be wide enough for its diameter, and you can
difficult terrain with a 10-foot radius that lasts until the rubble is cleared. Each 5-foot-diameter portion of the area requires at least 1 minute to clear by hand. If a pillar is created under a
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
Beholder Statue Hanging from the 30-foot-high, domed ceiling by three iron chains is a 6-foot-diameter carved stone beholder. Netherskull carved the statue using its carefully manipulated
uses its Telekinetic Ray to open and close the secret doors when it comes and goes through this tunnel. 39c. Death Tyrant All doors leading to this area are 1-foot-thick, 7-foot-diameter adamantine
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
and allowed to retreat here in mist form, Keresta returns to this sarcophagus and remains here, paralyzed in vampire form for 1 hour. At the end of the hour, she regains 1 hit point and is no longer
paralyzed. She waits here until her Regeneration trait returns her to full hit points, then gathers her forces (including Umbraxakar) and sets out to destroy any enemies still in Vanrakdoom. Treasure
Compendium
- Sources->Dungeons & Dragons->Tyranny of Dragons
19. Observation Room The floor of this room is 10 feet higher than the floor of area 18. A circular pane of crystal ten feet in diameter hangs vertically in this chamber, anchored to the ceiling
Compendium
- Sources->Dungeons & Dragons->Princes of the Apocalypse
you can see within range. Each pillar is a cylinder that has a diameter of 5 feet and a height of up to 30 feet. The ground where a pillar appears must be wide enough for its diameter, and you can
difficult terrain with a 10-foot radius that lasts until the rubble is cleared. Each 5-foot-diameter portion of the area requires at least 1 minute to clear by hand. If a pillar is created under a
Monsters
Fizban's Treasury of Dragons
needing to make an ability check.
Tunneler. The dragon can burrow through solid rock at half its burrowing speed and can leave a 20-foot-diameter tunnel in its wake.Multiattack. The dragon makes one
numbers.
If the dragon dies, the population of giant spider;giant spiders in the region returns to normal levels over the course of 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Days
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
8. Thanks for the Memories Ceiling. This cavern has a 30-foot-high ceiling.
Gas Spores. Three gas spores float above a large sinkhole surrounded by rubble. Another ten gas spores float inside the
sinkhole, which plunges 100 feet into darkness. (At the bottom of the sinkhole lies a moldering beholder corpse.)
Elevated Tunnel. A 10-foot-diameter tunnel in the west wall can be reached by
Compendium
- Sources->Dungeons & Dragons->Rise of Tiamat
19. Observation Room The floor of this room is 10 feet higher than the floor of area 18. A circular pane of crystal ten feet in diameter hangs vertically in this chamber, anchored to the ceiling
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
feet high. Clinging to the ceiling is a 20-foot-diameter, upside-down stone spider that resembles a giant tarantula.
Petrified Drow. Eight lifelike statues of drow warriors, four males and four
cobblestones at first glance. The floor is difficult terrain, as the skulls shift and break apart underfoot. 7b. Hall of the Spider That Waits Ceiling Sculpture. This chamber has a vaulted ceiling 40
Compendium
- Sources->Dungeons & Dragons->Rrakkma
Area Information Dimensions & Terrain A wrought iron spiral staircase, rusted and crumbling from disrepair and neglect, leads up to the ceiling of this circular chamber, twenty-five feet in diameter
. It appears that there may have once been a tower, or at the very least, another chamber above this room, but stone is all that remains where a doorway should be. The ceiling of this chamber is solid
Compendium
- Sources->Dungeons & Dragons->Curse of Strahd
X6. Southeast Annex This room is featureless except for a rough-edged, 10-foot-diameter circular hole in the floor to the east and empty torch sconces along the walls. Double doors of amber stand
open to the north and west. A single closed door lies just south of the western set of double doors. The ceiling here is 20 feet high. Beyond the open doors to the north, the characters can see a long
Compendium
- Sources->Dungeons & Dragons->Mordenkainen's Tome of Foes
an inch in diameter. It must end this movement in a space that can accommodate its full size. Otherwise, it takes 5 force damage and returns to the space where it began this movement. Slimy Organs
Compendium
- Sources->Dungeons & Dragons->Bigby Presents: Glory of the Giants
they came from. Transport Disks. Inlaid near one edge of each platform is a distinct 20-foot-diameter magical disk of intricately woven copper, iron, and silver. A creature standing on one of these disks
feet to the destination, where it hovers for 1 minute or until no more creatures or objects are on it, then returns to its original position. A creature who succeeds on this check automatically succeeds on future attempts to fly any disk to the same destination.
Compendium
- Sources->Dungeons & Dragons->Storm King's Thunder
Second Floor This level of the tower has an 80-foot-high ceiling and tall, slender windows set with panes of stained glass. Furnishings include a giant-sized bed and an enormous wooden chest sealed
10 feet above the floor is a navigation orb (see appendix B) that Zephyros uses to control the movement of the tower. Zephyros uses magic to move between levels. A 20-foot-diameter hole in the floor
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
feet in diameter. A character who examines the ceiling closely can spot the circular seam in the rock with a successful DC 15 Wisdom (Perception) check. The stone plug, which weighs 1,000 pounds, has
leather-bound tome (Ezzat’s spellbook) is clutched to the statue’s chest.
Secret Door. Hidden in the ceiling is a secret door leading to area 23 (see “Stone Plug” below).
The statue projects an
Compendium
- Sources->Dungeons & Dragons->The Wild Beyond the Witchlight
wooden ladle hangs from a lanyard looped around the lid’s knob.
Bavlorna’s cauldron is 4 feet in diameter and 3 feet tall. The cauldron is hot to the touch, because it is being heated by the coals
has a walking speed of 30 feet and returns to its spot over the coals after 10 minutes. If the cauldron scuttles away, a magmin emerges from within the pile of hot coals. It introduces itself as the
Compendium
- Sources->Dungeons & Dragons->Tales from the Yawning Portal->a3
51. Wind Tunnel This five-foot-diameter passage is dry and dusty, and it shows no sign of having been used for ages. Near the top of the corridor walls, about three feet from the ceiling, stone
lintels run the length of the passage. The corridor abruptly widens to a cube fifteen feet on a side with a corrugated floor. In the ceiling of this area, a bronze, circular trapdoor is set. The cover is






