cavern reason ground to have rules

Kadroth

Monsters Icewind Dale: Rime of the Frostmaiden

he's tight with Levistus. He rules the roost by sheer force of personality, though it chafes him that Hethyl Arkorran has more respect and influence within the cult. Kadroth doesn't involve Avarice

in cult affairs because he fears her spellcasting ability and her connection to the Arcane Brotherhood. She could take over the cult anytime she wanted, and Kadroth doesn't want to give her any reason

Piercer (Ice variant)

Monsters Icewind Dale: Rime of the Frostmaiden

ground below. A piercer is the larval form of a roper, and the two creatures often attack in tandem. A rock-like shell encases a piercer's body, giving it the look and texture of a stalactite. That

shell protects a soft, slug-like upper body that lets the piercer move across cavern walls and ceilings to position itself for prey. With its eye and mouth closed, the piercer is difficult to distinguish

Scion of Thrym

Monsters Bigby Presents: Glory of the Giants

);{"diceNotation":"1d6", "rollType":"recharge", "rollAction":"Glacial Upheaval"}. The scion digs its hands into the ground at a point it can see within 30 feet of itself and launches a magically conjured mass of

much damage and is pushed to the nearest unoccupied space outside the cylinder with no additional effects. At the start of the scion’s next turn, a mass of ice plummets to the ground on a point

Warforged Colossus

Monsters Eberron: Rising from the Last War

":"Eldritch Turret","rollDamageType":"force"} force damage, and if the target is a creature, it is knocked prone. Stomp. The colossus stomps one of its feet at a point on the ground within 20 feet of it

otherwise intact. “Karrnslayer” (Colossus WX-31) lost its legs but crawls through the Mournland, using its arms to drag its great bulk across the ground. It is always prone and can’t

Scion of Skoraeus

Monsters Bigby Presents: Glory of the Giants

. Carpets of golden moss that stone giants find tasty grow on cavern walls within 6 miles of the scion. Empowered Stone Giants. Stone giants within 1,000 feet of the scion gain a +7 bonus to attack and

a shock wave through the ground in a 60-footradius circle centered on itself. Each creature on the ground in that area that is concentrating must succeed on a DC 24 Constitution saving throw or lose concentration.

Ancient Dragon Turtle

Monsters Fizban's Treasury of Dragons

indeed, legends suggest that many unwitting sailors wrecked at sea have mistaken slumbering dragon turtles for solid ground. Ancient dragon turtles might sleep for years or decades while floating

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

Orcus Legacy

Monsters Out of the Abyss

creatures whose combined average hit points don’t exceed 500. These undead magically rise up from the ground or otherwise form in unoccupied spaces within 300 feet of Orcus and obey his commands

. A Taste of Undeath. Orcus casts chill touch (17th level). Creeping Death (Costs 2 Actions). Orcus chooses a point on the ground that he can see within 100 feet of him. A cylinder of swirling

Orcus

Monsters Mordenkainen Presents: Monsters of the Multiverse

creatures whose combined average hit points don’t exceed 500. These creatures magically rise up from the ground or otherwise form in unoccupied spaces within 300 feet of Orcus and obey his commands

Tail or Necrotic Bolt attack. Creeping Death (Costs 2 Actions). Orcus chooses a point on the ground that he can see within 100 feet of him. A cylinder of swirling necrotic energy 60 feet tall and

Young Dragon Turtle

Monsters Fizban's Treasury of Dragons

dragon turtles for solid ground. Ancient dragon turtles might sleep for years or decades while floating along the surface of the ocean, enjoying the warmth of the sun and letting vegetation take root on

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

Dragon Turtle Wyrmling

Monsters Fizban's Treasury of Dragons

creature can be as large as an island— and indeed, legends suggest that many unwitting sailors wrecked at sea have mistaken slumbering dragon turtles for solid ground. Ancient dragon turtles might

characters, and use the Dragon Turtle Spellcasting table to help select spells for a spellcasting dragon. (Though the Monster Manual doesn’t explicitly include dragon turtles in the variant rules for

Lorthuun

Monsters Out of the Abyss

eye ray.A Beholder's Lair A beholder's central lair is typically a large, spacious cavern with high ceilings, where it can attack without fear of closing to melee range. A beholder encountered in its

ties), the beholder can take one lair action to cause one of the following effects: A 50-foot square area of ground within 120 feet of the beholder becomes slimy; that area is difficult terrain until

Cradle of the Stone Scion

Monsters Bigby Presents: Glory of the Giants

stones and gems grow within 6 miles of the scion. Edible Moss. Carpets of golden moss that stone giants find tasty grow on cavern walls within 6 miles of the scion. Empowered Stone Giants. Stone

. The cradle causes the ground in a 20-foot square within 90 feet of itself to sprout crystal spikes until the start of its next turn. The area becomes difficult terrain for the duration. A creature

Cradle of the Frost Scion

Monsters Bigby Presents: Glory of the Giants

rushes at any foe that dares to challenge it. Emulating sagas of Thrym, the scion can achieve a tremendous feat of strength: creating a glacier in the ground and hurling it skyward, along with any

envelops the land within 6 miles of the scion (see the Dungeon Master’s Guide for rules on extreme cold). If the climate in the area already features extreme cold, the cold is numbing—creatures

Aarakocra Legacy

Species Elemental Evil Player's Companion

. Great Purpose Aarakocra enjoy peace and solitude. Most of them have little interest in dealing with other peoples and less interest in spending time on the ground. For this reason, it takes an

. Beak and Feather From below, aarakocra look much like large birds. Only when they descend to roost on a branch or walk across the ground does their humanoid appearance reveal itself. Standing

Hermit - Baldur's Gate

Backgrounds Baldur’s Gate: Descent into Avernus

a frivolous lark. You’ve maintained a solitary vigil outside the cavern entrance ever since. 2 You crossed the Guild in a bad way. Fortunately, its members think you’re dead. Less

past that could rewrite history. It might be information that would be damaging to the people who consigned you to exile, and hence the reason for your return to society. Work with your DM to

Klauth

Monsters Storm King's Thunder

contain numerous caves, two of them large enough for Klauth to shelter in. He keeps his legendary hoard in tunnels beneath one cavern, which can be entered only by lifting or pushing aside a massive slab of

lair action to cause one of the following effects; the dragon can’t use the same effect two rounds in a row: Magma erupts from a point on the ground the dragon can see within 120 feet of it

Baphomet Legacy

Monsters Out of the Abyss

, the Horned King and the Prince of Beasts. He rules over minotaur;minotaurs and others with savage hearts. He is worshiped by those who want to break the confines of civility and unleash their bestial

;The world is my hunting ground. Others are my prey.” 61–80 “Hate comes easily to me and explodes into rage.” 81–00 “I see those who oppose me not as

Criminal - Baldur's Gate

Backgrounds Baldur’s Gate: Descent into Avernus

underbelly of civilization, and you have survived up to this point by flouting the rules and regulations of society. Skill Proficiencies: Deception, Stealth Tool Proficiencies: One

Guild took over your family business, ran it into the ground, and burned the building for insurance money. You were driven into crime yourself, but you’ll never work for the Guild. You take

Zargon the Returner

Monsters Quests from the Infinite Staircase

is a slimy cavern beneath the lost city of Cynidicea. The elder evil lurks in the depths, feasting on sacrifices cast down by its worshipers. Lair Actions On initiative count 20 (losing initiative

lower affecting the targets end. Sucking Slime. Zargon creates a 20-foot-radius puddle of slime on the ground centered on a point within the lair. The slime is difficult terrain, and each creature in

Drow Cavern Seer

monsters

":"Quarterstaff", "rollDamageType":"Bludgeoning"} Bludgeoning damage. Cavern Distortion (1/Day). The drow raises a hand and magically causes pebbles and dust to rise from the ground to surround the drow

Disadvantage on ability checks and attack rolls. Underground Stride. While the drow is underground, Difficult Terrain caused by rubble or uneven ground doesn’t cost them extra movement. Quarterstaff

Shub-Niggurath

monsters

. Horrid Garden. Horrid vines, slick acidic dew and covering in flesh, gnawing mouths erupt from the ground in a 120-foot Emanation originating from Shub-Niggurath. The effect of this trait depends on

creatures. Level 0. No effect. Level 1. The ground in the Emanation is Difficult Terrain for non-Plants. At the end of Shub-Niggurath’s turns, including the turn in which this trait reached level

The Brimstone Behemoth

monsters

ground in its space and in any unoccupied spaces in any tunnels it left by burrowing within 100 feet. A creature that touches the lava for the first time on a turn or starts its turn in the lava takes

find its flame quenched.The Brimstone Behemoth’s Lair The Brimstone Behemoth’s lair is a vast underground cavern filled with magma, flames, and smoke. Once this colossus awakens, the

Shapechange Legacy

Spells Basic Rules (2014)

choose whether your equipment falls to the ground, merges into the new form, or is worn by it. Worn equipment functions as normal. The GM determines whether it is practical for the new form to wear a piece

of equipment, based on the creature's shape and size. Your equipment doesn't change shape or size to match the new form, and any equipment that the new form can't wear must either fall to the ground

Beholder Legacy

Monsters Monster Manual (2014)

. Eye Ray. The beholder uses one random eye ray.A Beholder’s Lair A beholder’s central lair is typically a large, spacious cavern with high ceilings, where it can attack without fear of

actions. On initiative count 20 (losing initiative ties), the beholder can take one lair action to cause one of the following effects: A 50-foot square area of ground within 120 feet of the

Aarakocra

races Mordenkainen Presents: Monsters of the Multiverse

birdfolk. Only when they roost on a branch or walk across the ground is their Humanoid nature clear. Standing upright, aarakocra are typically about 5 feet tall, and they have long, narrow legs that

At 1st level, you choose whether your character is a member of the human race or of a fantastical race. If you select a fantastical race, follow these additional rules during character creation

Kobold Legacy

Species Volo's Guide to Monsters

sent Kurtulmak to retrieve it. Garl lured his pursuer into a maze-like cavern, then collapsed the exits behind him, trapping Kurtulmak for all eternity. Kurtulmak is a hateful deity, one who despises

, designed to collapse under the weight of any creature heavier than a kobold. On occasion, the route through a kobold lair runs along a ledge that borders a cavern or a crevasse, and the kobolds might

Orc Legacy

races Mordenkainen Presents: Monsters of the Multiverse

and tenacity that can’t be matched, and the god equipped his children to be able to live above or below ground. On some worlds, such as Eberron, orcs were among the first defenders of the natural

additional rules during character creation. Ability Score Increases When determining your character’s ability scores, increase one score by 2 and increase a different score by 1, or increase

Rules of the Trial

Compendium - Sources->Dungeons & Dragons->Van Richten’s Guide to Ravenloft

Rules of the Trial On the night of certain full moons, Chakuna selects fifteen souls within her domain who she considers worthy prey. She leads the participants to Pantara Lodge, shows them every

courtesy, and then sets out the rules of her test: Contenders may divide into small groups or choose to participate alone. Once groups are established at the trial’s start, alliances between contenders

Rules of the Trial

Compendium - Sources->Dungeons & Dragons->Van Richten’s Guide to Ravenloft

Rules of the Trial On the night of certain full moons, Chakuna selects fifteen souls within her domain who she considers worthy prey. She leads the participants to Pantara Lodge, shows them every

courtesy, and then sets out the rules of her test: Contenders may divide into small groups or choose to participate alone. Once groups are established at the trial’s start, alliances between contenders

1. Fungus Forest

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

clearings where the fungi have been torn out of the mossy ground. Characters who search for tracks and succeed on a DC 10 Wisdom (Survival) check find several large, bare footprints made by the ettin who regularly feeds on the mushrooms in this cavern.

1. Fungus Forest Fungi. Mossy paths run between patches of stout trillimac and a forest of towering zurkhwood whose caps scrape the 40-foot-high ceiling. Clearings. Throughout the cavern are small

1. Fungus Forest

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

clearings where the fungi have been torn out of the mossy ground. Characters who search for tracks and succeed on a DC 10 Wisdom (Survival) check find several large, bare footprints made by the ettin who regularly feeds on the mushrooms in this cavern.

1. Fungus Forest Fungi. Mossy paths run between patches of stout trillimac and a forest of towering zurkhwood whose caps scrape the 40-foot-high ceiling. Clearings. Throughout the cavern are small

Actions

Compendium - Sources->Dungeons & Dragons->Dragons of Stormwreck Isle

Actions When a creature takes its action, it can choose from the options in the “Actions” section of its stat block and the options under Actions in the Basic Rules. Melee and Ranged Attacks The most

common actions that a creature takes in combat are melee and ranged attacks. See Making an Attack in the Basic Rules for how attacks work. Any damage or other effects that occur as a result of an

16. Central Cavern

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

16. Central Cavern This 180-foot-diameter spherical cavern has a domed ceiling and a bowl-shaped floor. Along its perimeter are stone ledges (area 16a) that don’t quite encircle the chamber. Any

creature knocked off a ledge goes tumbling down the inward-sloping rock walls to the bottom of the cavern (area 16b), which is strewn with rocks, bones, and the bodies of two dead umber hulks. At the

Actions

Compendium - Sources->Dungeons & Dragons->Dragons of Stormwreck Isle

Actions When a creature takes its action, it can choose from the options in the “Actions” section of its stat block and the options under Actions in the Basic Rules. Melee and Ranged Attacks The most

common actions that a creature takes in combat are melee and ranged attacks. See Making an Attack in the Basic Rules for how attacks work. Any damage or other effects that occur as a result of an

16. Central Cavern

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

16. Central Cavern This 180-foot-diameter spherical cavern has a domed ceiling and a bowl-shaped floor. Along its perimeter are stone ledges (area 16a) that don’t quite encircle the chamber. Any

creature knocked off a ledge goes tumbling down the inward-sloping rock walls to the bottom of the cavern (area 16b), which is strewn with rocks, bones, and the bodies of two dead umber hulks. At the

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