barrier both diffusing ceiling rounds

Ancient Blue Dragon Legacy

Monsters Basic Rules (2014)

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

(3d6);{"diceNotation":"3d6","rollType":"damage","rollAction":"Ceiling Collapse","rollDamageType":"bludgeoning"} bludgeoning damage and be knocked prone and buried. The buried target is restrained and

Adult Blue Dragon Legacy

Monsters Basic Rules (2014)

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

(3d6);{"diceNotation":"3d6","rollType":"damage","rollAction":"Ceiling Collapse","rollDamageType":"bludgeoning"} bludgeoning damage and be knocked prone and buried. The buried target is restrained and

Adult White Dragon Legacy

Monsters Basic Rules (2014)

the ceiling to latch on like bats or slithering down icy crevasses. A legendary white dragon’s innate magic deepens the cold in the area around its lair. Mountain caverns are fast frozen by the

breath. Lair Actions On initiative count 20 (losing initiative ties), the dragon takes a lair action to cause one of the following effects; the dragon can’t use the same effect two rounds in

Ancient White Dragon Legacy

Monsters Basic Rules (2014)

the ceiling to latch on like bats or slithering down icy crevasses. A legendary white dragon’s innate magic deepens the cold in the area around its lair. Mountain caverns are fast frozen by the

freezing breath. Lair Actions On initiative count 20 (losing initiative ties), the dragon takes a lair action to cause one of the following effects; the dragon can’t use the same effect two rounds in

Zikzokrishka

Monsters Candlekeep Mysteries

, Zikzokrishka can take a lair action to cause one of the following effects. She can’t use the same effect two rounds in a row: Part of the ceiling collapses above one creature that Zikzokrishka

can see. The creature must succeed on a DC 15 Dexterity saving throw or take 21 (6d6);{"diceNotation":"6d6","rollType":"damage","rollAction":"Ceiling Collapse","rollDamageType":"bludgeoning

Iymrith

Monsters Storm King's Thunder

intruders. Lair Actions On initiative count 20 (losing initiative ties), the dragon takes a lair action to cause one of the following effects; the dragon can’t use the 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 (3d6);{"diceNotation":"3d6

Drow Mother of Rebellion

Monsters Mordenkainen Presents: Monsters of the Multiverse

and using Charisma as the spellcasting ability (spell save DC 20): At will: command, dancing lights, detect magic, thaumaturgy 2/day each: banishment, blade barrier, cure wounds, hold person, plane

action two rounds in a row: Perceive Interlopers. The drow projects her mind throughout her lair, marking any potential threats against her or her retinue. Until initiative count 20 of the next round

Zariel Legacy

Monsters Mordenkainen’s Tome of Foes

), detect evil and good, fireball, invisibility (self only), wall of fire 3/day each: blade barrier, dispel evil and good, finger of death Legendary Resistance (3/Day). If Zariel fails a saving throw

the following effects; she can’t use the same effect two rounds in a row: Zariel casts major image four times at its lowest level, targeting different areas with the spell. Zariel prefers to

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

; the medusa can’t take the same lair action two rounds in a row: Petrifying Wave. Up to three creatures the medusa can see within the lair are partially turned to stone. Each target must make a

Baphomet

Monsters Mordenkainen Presents: Monsters of the Multiverse

ties), Baphomet can take one of the following lair actions; he can’t take the same lair action two rounds in a row: Illusory Room. Baphomet casts mirage arcane, affecting a room within the lair

action to land on a ceiling to attack targets flying near it. Seal the Way. Baphomet seals one doorway or other entryway within the lair. The opening must be unoccupied. It is filled with solid stone

Baphomet Legacy

Monsters Out of the Abyss

magical effects; he can’t use the same effect two rounds in a row: Baphomet seals one doorway or other entryway within the lair. The opening must be unoccupied. It is filled with solid stone for

gravity reversal if he’s in the room, although he likes to use this action to land on a ceiling to attack targets flying near it. Baphomet casts mirage arcane, affecting a room within the lair

Drow Matron Mother

Monsters Mordenkainen Presents: Monsters of the Multiverse

and using Charisma as the spellcasting ability (spell save DC 20): At will: command, dancing lights, detect magic, thaumaturgy 2/day each: banishment, blade barrier, cure wounds, hold person, plane

can take one of the following lair actions when in her lair; she can’t take the same lair action two rounds in a row: Perceive Interlopers. The drow projects her mind throughout her lair, marking

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

Zariel

Monsters Mordenkainen Presents: Monsters of the Multiverse

evil and good, fireball, invisibility (self only), major image, wall of fire 3/day each: blade barrier, dispel evil and good, finger of death Teleport. Zariel teleports, along with any equipment

’t take the same lair action two rounds in a row: Fireball. Zariel casts the fireball spell. Infernal Illusions. Zariel casts the major image spell four times, targeting different areas with it

Adult Amethyst Dragon

Monsters Fizban's Treasury of Dragons

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

connect the main caves to the three chambers above. Each chimney appears to continue up through the ceiling of the upper level and down through the floor of the lower level, but the dragon’s

Ancient Deep Dragon Legacy

Monsters Fizban's Treasury of Dragons

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

initiative ties), the dragon can take one of the following lair actions; the dragon can’t take the same lair action two rounds in a row: Deep Torpor. The dragon casts the slow spell, requiring no

Adult Deep Dragon Legacy

Monsters Fizban's Treasury of Dragons

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

initiative count 20 (losing initiative ties), the dragon can take one of the following lair actions; the dragon can’t take the same lair action two rounds in a row: Deep Torpor. The dragon casts the

Mighty Servant of Leuk-o

Magic Items Tasha’s Cauldron of Everything

conjecture than fact, often referring to otherworldly beings, the mysterious Barrier Peaks in Oerth, and the supposedly related device known as the Machine of Lum the Mad. The best details on the device

), it requires two attuned crew members to be inside the servant and spend their actions on 3 consecutive rounds performing the command. Should the crew members begin the process of entering the code

Ancient Amethyst Dragon

Monsters Fizban's Treasury of Dragons

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

Actions On initiative count 20 (losing initiative ties), the dragon can take one of the following lair actions; the dragon can’t take the same lair action two rounds in a row: Beguiling Whisper

Juiblex Legacy

Monsters Out of the Abyss

initiative ties), Juiblex can take a lair action to cause one of the following effects; it can’t use the same effect two rounds in a row: Juiblex slimes a square area of ground it can see within the

Guide) appears on a spot on the ceiling that Juiblex chooses within the lair. The slime disintegrates after 1 hour. Regional Effects The region containing Juiblex’s lair is warped by its

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

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

7. Kitchen

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

bubbling stew pot and shanks of venison suspended above it. Strings of onions and herbs crisscross the ceiling like webs above cluttered tables. Preparing meals are four humans: two men and two women. All

they can put up a fight. If attacked, one cultist runs to the drake kennels (area 2) to fetch Trepsin and his drakes. Those reinforcements arrive 3 rounds later.

7. Kitchen

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

bubbling stew pot and shanks of venison suspended above it. Strings of onions and herbs crisscross the ceiling like webs above cluttered tables. Preparing meals are four humans: two men and two women. All

put up a fight. If attacked, one cultist runs to the drake kennels (area 2) to fetch Trepsin and his drakes. Those reinforcements arrive 3 rounds later.

24: Escape Pod

Compendium - Sources->Dungeons & Dragons->The Book of Many Things

in the ceiling to open, and a pulse of energy to propel the pod through a narrow tunnel and out of the Donjon Sphere, leaving the pod adrift in the Astral Sea. The entire sequence takes 3 rounds after the lever is pulled.

Harshnag's Sacrifice

Compendium - Sources->Dungeons & Dragons->Storm King's Thunder

does his utmost to keep Iymrith from fleeing by attempting to grapple her on later turns. After falling debris deals damage for 2 rounds, the ceiling collapses the next time initiative reaches 0

(specifically her tail attack and wing attack) against the characters. Harshnag quickly becomes annoyed with the adventurers’ refusal to leave. If they linger in area 6 for more than 2 rounds, Harshnag

12. Dynamo

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

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.

24. Sandbox

Compendium - Sources->Dungeons & Dragons->Tales from the Yawning Portal->a3

grating on stone. Small panels near the ceiling move to expose four holes the size of a human fist on each wall. Dust trickles from the holes. After another 5 rounds passes, golden sand starts to pour

24. Sandbox The two thick lines on the map mark the boundaries of a trap. A character who examines the ceiling 20 feet overhead as the party passes under one of the marked areas and makes a

Wandering Monsters

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

two attached to the ceiling, approach the party and attack the first adventurers to come within reach of their mucus-coated tentacles. If a carrion crawler paralyzes a character with its tentacles, it

continues to make bite attacks against that character on subsequent rounds as it feeds. The carrion crawlers are too stupid and hungry to flee in the face of certain death. Goblin Skull-Hunters Pibble

29. The Valves of Mithral

Compendium - Sources->Dungeons & Dragons->Tales from the Yawning Portal->a7

in 6 rounds, and each round thereafter it will rise higher and encompass one more step. If unchecked, the flow of blood will fill the foyer to the ceiling in 20 rounds. Fire of any sort, magical or

halts the flow for 3 rounds. Create or destroy water turns the blood to water. Disintegrate destroys all the blood. Levitate coagulates the blood and causes it to rise up as a Huge red ochre jelly

A Deep Dragon's Lair

Compendium - Sources->Dungeons & Dragons->Fizban's Treasury of Dragons

, walls, and ceiling covered in carpets of mold and moss, or featuring larger mushrooms and plants in neatly organized displays. The challenge rating of a legendary deep dragon increases by 1 when

it’s encountered in its lair. Lair Actions On initiative count 20 (losing initiative ties), the dragon can take one of the following lair actions; the dragon can’t take the same lair action two rounds in

20. False Tomb

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

Ancient Topaz Dragon

Monsters Fizban's Treasury of Dragons

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

initiative count 20 (losing initiative ties), the dragon can take one of the following lair actions; the dragon can’t take the same lair action two rounds in a row: Beguiling Whisper. The dragon

6. Frog Lake

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

6. Frog Lake Pharblex and the bullywugs raise giant frogs in this water-filled cavern. The ceiling arches 30 feet overhead. The floor of the pool drops off suddenly from the shore, with the water

. Characters hear more croaking and at least a dozen splashes from area 7. If they are still in area 6 or area 7 after 2 rounds, they are attacked by twelve giant frogs. The frogs focus their attacks

D&D Beyond

Search Results