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Returning 35 results for 'rules from cavern'.
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Monsters
Fizban's Treasury of Dragons
table to help select spells for a spellcasting dragon. (Though the Monster Manual doesn’t explicitly include dragon turtles in the variant rules for making a dragon a spellcaster, you can apply
those rules to these aquatic dragons.)
Dragon Turtle Personality Traits
d8;{"diceNotation":"1d8","rollType":"roll","rollAction":"Trait"}
Trait
1
I speak slowly and deliberately
Compendium
- Sources->Dungeons & Dragons->Out of the Abyss
provide the spiders with easy prey, while the presence of the spiders provides additional protection for thehatchery. The eastern half of this cavern floor is covered in webs stretching up to the ceiling
. See “Dungeon Hazards” in chapter 5 of the Dungeon Master’s Guide for rules about webs. Eight giant spiders lurk in the nest, minus any killed elsewhere in the nursery.
Compendium
- Sources->Dungeons & Dragons->Out of the Abyss
provide the spiders with easy prey, while the presence of the spiders provides additional protection for thehatchery. The eastern half of this cavern floor is covered in webs stretching up to the ceiling
. See “Dungeon Hazards” in chapter 5 of the Dungeon Master’s Guide for rules about webs. Eight giant spiders lurk in the nest, minus any killed elsewhere in the nursery.
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
38. Zombie Horde Zombies. The stench of death fills this 20-foot-high cavern, which contains forty zombies in various states of decay. They shamble about aimlessly.
Sinkhole. A 70-foot-deep
dividing the zombies into mobs of ten or fewer and using the mob rules in chapter 8 of the Dungeon Master’s Guide.
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
38. Zombie Horde Zombies. The stench of death fills this 20-foot-high cavern, which contains forty zombies in various states of decay. They shamble about aimlessly.
Sinkhole. A 70-foot-deep
dividing the zombies into mobs of ten or fewer and using the mob rules in chapter 8 of the Dungeon Master’s Guide.
Compendium
- Sources->Dungeons & Dragons->Sword Coast Adventurer’s Guide
advantages over each other, they all live under the heel of House Baenre and the Matron Mother, who rules the city in Lolth’s name. On a large plateau high above the cavern floor is Tier Breche, also
drow in their refuge. The constant fear of punishment, from one’s mistress or another, more powerful drow, keeps most slaves obedient, even when they aren’t directly supervised. The great cavern of
Compendium
- Sources->Dungeons & Dragons->Sword Coast Adventurer’s Guide
advantages over each other, they all live under the heel of House Baenre and the Matron Mother, who rules the city in Lolth’s name. On a large plateau high above the cavern floor is Tier Breche, also
drow in their refuge. The constant fear of punishment, from one’s mistress or another, more powerful drow, keeps most slaves obedient, even when they aren’t directly supervised. The great cavern of
Compendium
- Sources->Dungeons & Dragons->Out of the Abyss
, svirfneblin, and Zhentarim enclaves
Thousands of years’ worth of trickling water carved out the cavern where the drow, the duergar, and the svirfneblin established Mantol-Derith. Four warehouses
have been excavated at the corners of the cavern, each controlled by an enclave and containing offices and temporary lodgings for its merchants. Few of Mantol-Derith’s denizens are permanent residents
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
Approach An old yuan-ti trap meant to prevent approach to the gate still functions in this area. A pressure plate under the water and mud extends the full width of the cavern entrance. A character
searching the cavern for traps who succeeds on a DC 20 Wisdom (Perception) check spots the pressure plate. The trap triggers whenever a weight of 50 pounds or more is placed on the pressure plate. Darts
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
Approach An old yuan-ti trap meant to prevent approach to the gate still functions in this area. A pressure plate under the water and mud extends the full width of the cavern entrance. A character
searching the cavern for traps who succeeds on a DC 20 Wisdom (Perception) check spots the pressure plate. The trap triggers whenever a weight of 50 pounds or more is placed on the pressure plate. Darts
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
17. Battlefield Cavern This 30-foot-high cavern was the main front of the battle between the yuan-ti and the nagas. 17a. Bones in the Mud The water here is 2 feet deep, and the cavern floor beneath
is one of Halaster’s gates (see “Gates”). Its frame is composed of an assemblage of hundreds of tiny, interlocking stone gears. This gate’s rules are as follows: Any creature that inspects the frame
Compendium
- Sources->Dungeons & Dragons->Out of the Abyss
, svirfneblin, and Zhentarim enclaves
Thousands of years’ worth of trickling water carved out the cavern where the drow, the duergar, and the svirfneblin established Mantol-Derith. Four warehouses
have been excavated at the corners of the cavern, each controlled by an enclave and containing offices and temporary lodgings for its merchants. Few of Mantol-Derith’s denizens are permanent residents
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
17. Battlefield Cavern This 30-foot-high cavern was the main front of the battle between the yuan-ti and the nagas. 17a. Bones in the Mud The water here is 2 feet deep, and the cavern floor beneath
is one of Halaster’s gates (see “Gates”). Its frame is composed of an assemblage of hundreds of tiny, interlocking stone gears. This gate’s rules are as follows: Any creature that inspects the frame
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
unleash the savage creature on their githyanki enemies in Seadeeps and the Crystal Labyrinth. 8a. Neothelid’s Cave Magic walls of force seal off all tunnels leading to this enormous cavern (see
“Walls of Force” below). The floor, while uneven throughout, has been worn smooth by the creature trapped here. The cavern has the following features: Neothelid. A 210-foot-long neothelid (see appendix A
Compendium
- Sources->Dungeons & Dragons->Lost Mine of Phandelver
5. Overpass Where a high tunnel passes through the larger tunnel cavern below, the goblins have set up a bridge guard post. The stream passage continues up beyond another set of uneven steps ahead
, bending eastward as it goes. A waterfall sounds out from a larger cavern somewhere ahead of you.
If the characters didn’t spot the bridge while navigating area 4, they spot it now. Add: A rickety
Compendium
- Sources->Dungeons & Dragons->Lost Mine of Phandelver
5. Overpass Where a high tunnel passes through the larger tunnel cavern below, the goblins have set up a bridge guard post. The stream passage continues up beyond another set of uneven steps ahead
, bending eastward as it goes. A waterfall sounds out from a larger cavern somewhere ahead of you.
If the characters didn’t spot the bridge while navigating area 4, they spot it now. Add: A rickety
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
unleash the savage creature on their githyanki enemies in Seadeeps and the Crystal Labyrinth. 8a. Neothelid’s Cave Magic walls of force seal off all tunnels leading to this enormous cavern (see
“Walls of Force” below). The floor, while uneven throughout, has been worn smooth by the creature trapped here. The cavern has the following features: Neothelid. A 210-foot-long neothelid (see appendix A
Compendium
- Sources->Dungeons & Dragons->Fizban's Treasury of Dragons
, a rocky cavern dimly lit by blue light filtering through the icy vault high above. The largest of the dragon’s frozen trophies are scattered about the grotto. Low Cavern. Beyond the grotto, the
stream leads to a low-ceilinged cavern the dragon used as a sleeping place when smaller; it might now serve as a home for the dragon’s minions. Upper Cavern. High above the grotto floor is a large cave
Compendium
- Sources->Dungeons & Dragons->Fizban's Treasury of Dragons
, a rocky cavern dimly lit by blue light filtering through the icy vault high above. The largest of the dragon’s frozen trophies are scattered about the grotto. Low Cavern. Beyond the grotto, the
stream leads to a low-ceilinged cavern the dragon used as a sleeping place when smaller; it might now serve as a home for the dragon’s minions. Upper Cavern. High above the grotto floor is a large cave
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
character unless the character attacks it. 9b. Arch Gate to Level 15 Rubble. The floor of this 50-foot-high cavern is strewn with the remains of a dozen gargoyles. (The gargoyles once guarded the gate in
this cavern, but the Stonecloaks destroyed them.)
Arch. A ramp hugs the south wall and climbs to a 20-foot-high ledge. A stone arch is embedded in the wall at the west end of the ledge.
The arch
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
character unless the character attacks it. 9b. Arch Gate to Level 15 Rubble. The floor of this 50-foot-high cavern is strewn with the remains of a dozen gargoyles. (The gargoyles once guarded the gate in
this cavern, but the Stonecloaks destroyed them.)
Arch. A ramp hugs the south wall and climbs to a 20-foot-high ledge. A stone arch is embedded in the wall at the west end of the ledge.
The arch
Compendium
- Sources->Dungeons & Dragons->Lost Mine of Phandelver
light sources or darkvision. Stalagmites. Found in many of the natural caverns, these spires of rock rise up from the floor and can be used for cover (see “Cover” in the Basic Rules). BOOMING WAVES
underfoot shiver. Waves come about two minutes apart, growing louder toward the northeast.
Wave Echo Cave is nowhere near the ocean, but a water-filled cavern deep in the mine is connected to an
Compendium
- Sources->Dungeons & Dragons->Lost Mine of Phandelver
light sources or darkvision. Stalagmites. Found in many of the natural caverns, these spires of rock rise up from the floor and can be used for cover (see “Cover” in the Basic Rules). BOOMING WAVES
underfoot shiver. Waves come about two minutes apart, growing louder toward the northeast.
Wave Echo Cave is nowhere near the ocean, but a water-filled cavern deep in the mine is connected to an
Compendium
- Sources->Dungeons & Dragons->Monster Manual
Piercer Aberrant Counterfeit Stalactite Habitat: Underdark; Treasure: Individual Piercers resemble stalactites, but each has a toothy maw and a single eye. They hang from cavern ceilings along routes
.
—X the Mystic’s
Rules of Dungeon Survival
Olivier Bernard
Piercer Medium Aberration, Unaligned
AC 15 Initiative +3 (13)
HP 22 (3d8 + 9)
Speed 5 ft., Climb 15 ft.
Mod Save
Compendium
- Sources->Dungeons & Dragons->Monster Manual
Piercer Aberrant Counterfeit Stalactite Habitat: Underdark; Treasure: Individual Piercers resemble stalactites, but each has a toothy maw and a single eye. They hang from cavern ceilings along routes
.
—X the Mystic’s
Rules of Dungeon Survival
Olivier Bernard
Piercer Medium Aberration, Unaligned
AC 15 Initiative +3 (13)
HP 22 (3d8 + 9)
Speed 5 ft., Climb 15 ft.
Mod Save
Compendium
- Sources->Dungeons & Dragons->Out of the Abyss
Terrain Encounters The Underdark contains dangerous hazards and wondrous terrain. Special terrain rules are explained after the table. d20 Encounter 1 Boneyard 2 Cliff and ladder 3 Crystal
clusters 4 Fungus cavern 5 Gas leak 6 Gorge 7 High ledge 8 Horrid sounds 9 Lava swell 10 Muck pit 11 Rockfall 12 Rope bridge 13 Ruins 14 Shelter 15 Sinkhole 16 Slime or mold 17 Steam vent 18 Underground
Compendium
- Sources->Dungeons & Dragons->Out of the Abyss
Terrain Encounters The Underdark contains dangerous hazards and wondrous terrain. Special terrain rules are explained after the table. d20 Encounter 1 Boneyard 2 Cliff and ladder 3 Crystal
clusters 4 Fungus cavern 5 Gas leak 6 Gorge 7 High ledge 8 Horrid sounds 9 Lava swell 10 Muck pit 11 Rockfall 12 Rope bridge 13 Ruins 14 Shelter 15 Sinkhole 16 Slime or mold 17 Steam vent 18 Underground
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
stalagmites have been sawed off, and a lintel stone rests atop them. Chiseled into the lintel stone are the words “DON THE CRYSTAL CROWN” in Dwarvish. The rules of this gate are as follows: The gate
unoccupied space next to the gate located there. 11b. Trollwarp Cavern Stalagmites. This 20-foot-high cave contains ten stalagmites that been twisted by Halaster’s magic so that each bears a passing
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
stalagmites have been sawed off, and a lintel stone rests atop them. Chiseled into the lintel stone are the words “DON THE CRYSTAL CROWN” in Dwarvish. The rules of this gate are as follows: The gate
unoccupied space next to the gate located there. 11b. Trollwarp Cavern Stalagmites. This 20-foot-high cave contains ten stalagmites that been twisted by Halaster’s magic so that each bears a passing
Compendium
- Sources->Dungeons & Dragons->Out of the Abyss
The Rifts Three large chasms score the floor of the cavern of Menzoberranzan. Clawrift The Clawrift’s uncharted depths have long been rumored to extend into the Abyss. This legend was seemingly
5 of the Dungeon Master’s Guide for rules on escaping webs. Characters entering Menzoberranzan by means of Vizeran DeVir’s secret tunnel come to a secret door that pulls open to reveal a narrow ledge
Compendium
- Sources->Dungeons & Dragons->Out of the Abyss
13. Dumping Pit Victims of Narrak’s experiments are dumped here. Exposure to the faerzress has begun to animate the corpses. This cavern is one enormous pit that reeks of death and decomposed flesh
leads to a narrow, meandering tunnel, the floor of which is sunk below a foot of foul water. See the “Whorlstone Tunnels: General Features” sidebar for rules on narrow tunnels and foul water. Treasure
Compendium
- Sources->Dungeons & Dragons->Out of the Abyss
The Rifts Three large chasms score the floor of the cavern of Menzoberranzan. Clawrift The Clawrift’s uncharted depths have long been rumored to extend into the Abyss. This legend was seemingly
5 of the Dungeon Master’s Guide for rules on escaping webs. Characters entering Menzoberranzan by means of Vizeran DeVir’s secret tunnel come to a secret door that pulls open to reveal a narrow ledge
Compendium
- Sources->Dungeons & Dragons->Out of the Abyss
13. Dumping Pit Victims of Narrak’s experiments are dumped here. Exposure to the faerzress has begun to animate the corpses. This cavern is one enormous pit that reeks of death and decomposed flesh
leads to a narrow, meandering tunnel, the floor of which is sunk below a foot of foul water. See the “Whorlstone Tunnels: General Features” sidebar for rules on narrow tunnels and foul water. Treasure
Compendium
- Sources->Dungeons & Dragons->Princes of the Apocalypse
Geode Locations G1. Hall of the Guardians This cave lies at the end of a twisting, declining tunnel that began in area F13 of the Fane of the Eye. The rough walls of this cavern rise to a vaulted
ceiling hung with stalactites and clumps of slender, luminous crystals that bathe the cavern in a soft, violet light. Passages lead east and west. To the east, the tunnel ascends. The western passage is
Compendium
- Sources->Dungeons & Dragons->Princes of the Apocalypse
Geode Locations G1. Hall of the Guardians This cave lies at the end of a twisting, declining tunnel that began in area F13 of the Fane of the Eye. The rough walls of this cavern rise to a vaulted
ceiling hung with stalactites and clumps of slender, luminous crystals that bathe the cavern in a soft, violet light. Passages lead east and west. To the east, the tunnel ascends. The western passage is