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Returning 35 results for 'before being diameter ceiling reveals'.
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Spells
Player’s Handbook
would sense the Alarm or Glyph of Warding spell or a mechanical pit trap, but it wouldn’t reveal a natural weakness in the floor, an unstable ceiling, or a hidden sinkhole.
This spell reveals
Find Traps
Legacy
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Spells
Basic Rules (2014)
would not reveal a natural weakness in the floor, an unstable ceiling, or a hidden sinkhole.
This spell merely reveals that a trap is present. You don't learn the location of each trap, but you do learn the general nature of the danger posed by a trap you sense.
Adult Brass Dragon
Legacy
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Monsters
Basic Rules (2014)
’s desert lair is typically a ruin, canyon, or cave network with ceiling holes to allow for sunlight.
Lair Actions
On initiative count 20 (losing initiative ties), the dragon takes a lair action
illusion with a successful DC 20 Intelligence (Investigation) check. Any physical interaction with an image reveals it to be an illusion, because objects pass through it.
Whenever a creature with an
Ancient Brass Dragon
Legacy
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Monsters
Basic Rules (2014)
speed.A Brass Dragon’s Lair
A brass dragon’s desert lair is typically a ruin, canyon, or cave network with ceiling holes to allow for sunlight.
Lair Actions
On initiative count 20 (losing
image from a distance can tell it’s an illusion with a successful DC 20 Intelligence (Investigation) check. Any physical interaction with an image reveals it to be an illusion, because objects pass
Monsters
Spelljammer: Adventures in Space
eye and mouth are closed, an eye monger looks like nothing more than a 12-foot-diameter asteroid. When it senses vibrations in the space around it, the eye monger opens its eye and reveals its true
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
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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
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
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
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
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
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->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
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->Waterdeep: Dungeon of the Mad Mage
8. Crossroads The ceiling of this 30-foot-high cavern is studded with stalactites, and the floor is so uneven that it counts as difficult terrain. A search of the cavern reveals nothing dangerous or valuable.
Compendium
- Sources->Dungeons & Dragons->Tomb of Annihilation Supplement
diameter, caked with dried blood. Set into the base of the bowl is an empty niche, and hanging from the ceiling above the altar is a bloodstained iron hook at the end of a rusty chain. A search of the wall
frescoes reveals that the snakes’ eye sockets once held precious gemstones. Xorn living in the mountain plucked out and ate all the gems, leaving behind empty, faceted indentations. Yuan-ti liked to
Compendium
- Sources->Dungeons & Dragons->Tomb of Annihilation
, 15 feet below the ceiling and 60 feet above the pit floor. A detect magic spell or similar magic reveals auras of abjuration and transmutation around each platform. Each disk is wide enough that
equipped to do so. Floating Platforms The circular wooden platforms are 10 feet in diameter and hover between 6 and 12 feet apart, as shown on map 5.3. They float at the same level as the balconies
Compendium
- Sources->Dungeons & Dragons->Curse of Strahd
10. Conservatory Gossamer drapes cover the windows of this elegantly appointed hall, which has a brass-plated chandelier hanging from the ceiling. Upholstered chairs line the walls, and stained-glass
. Alabaster figurines of well-dressed dancers adorn the mantelpiece. Close inspection of them reveals that several are carvings of well-dressed skeletons.
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
39. Southwest Chamber The walls, floor, and ceiling of this room are scorched. Strewn about are blackened pieces of furniture, shards of smoky glass, and charred splinters of wood and bone. A
character who examines the room thoroughly and succeeds on a DC 14 Intelligence (Investigation) check concludes that four separate fiery eruptions caused the destruction. A successful DC 19 Intelligence (Arcana) check reveals that the damage was likely the result of a meteor swarm spell cast in the room.
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
-foot-diameter circular lozenge of crystal (the Runestone) embedded at the peak of a 120-foot-tall stalagmite.
Stalactites. The cavern walls taper inward as they rise, becoming a curved, 200-foot-high
ceiling dotted with stalactites 10 to 15 feet long. A 60-foot-long stalactite hangs directly above the stalagmite tower, its tip 10 feet above the brightly glowing Runestone.
Stalagmites. The
Compendium
- Sources->Dungeons & Dragons->Tales from the Yawning Portal->a7
on it, and a casting of detect evil and good or a paladin’s use of Divine Sense reveals it as a desecrated place. Mouth Trap. The mouth opening is similar to a sphere of annihilation, but it is about 3
feet in diameter—plenty of room for those who wish to leap in and be completely and forever destroyed. A character who examines the mouth and succeeds on a DC 20 Intelligence (Arcana) check identifies the trap for what it is.
Compendium
- Sources->Dungeons & Dragons->Out of the Abyss
dozens of glinting objects in the goo beneath their feet. Further inspection reveals the sparkling objects are precious gems. For every minute the adventurers spend in this cave, there is a 25 percent
chance they attract the attention of 1d4 giant spiders from area 11. The spiders scuttle along the walls and ceiling, avoiding the gooey floor. Treasure If the adventurers take 10 minutes to search through the goo, they can retrieve a total of twenty 50 gp gems.
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->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
Compendium
- Sources->Dungeons & Dragons->Tomb of Annihilation Supplement
20. Haunted Cage Hanging by a chain from the ceiling of this dark, rectangular room is an old diver’s cage with barnacles clinging to it. The cage is eight feet tall, five feet in diameter, and
reveals that the conch is a single-use magic item with the following property: a creature can use an action to blow the conch like a horn, creating an effect identical with that of a Leomund’s tiny hut
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->Curse of Strahd
bed fitted with leather restraints. At the foot of the bed rests a closed iron chest, is lid sculpted with an emblem.
A wooden ladder leads up to a trapdoor in the ceiling. Thin streams of water drip
through the trapdoor’s rotting wood, forming a puddle around the base of the ladder.
The ceiling here is 9 feet high. The manacles are rusted and can be easily torn from the walls. The trapdoor in
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->Basic Rules (2014)
triggers the trap. Rolling Sphere Mechanical trap When 20 or more pounds of pressure are placed on this trap's pressure plate, a hidden trapdoor in the ceiling opens, releasing a 10-foot-diameter
(Investigation) check reveals variations in the mortar and stone that betray the pressure plate's presence. The same check made while inspecting the ceiling notes variations in the stonework that
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
mountain with a full moon symbol above it. Close inspection of the moon reveals a half-inch-diameter hole in the middle of it. The arch is one of Halaster’s magic gates (see “Gates”). Its rules are
amid thick webs that fill the top 10 feet beneath the 30-foot-high ceiling.
Hidden Arch. The southern half of the cave is filled with thick, sticky webs. (These webs conceal an arch embedded in a
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