before being diameter contiguous reduces

Eyestalk of Gzemnid

Monsters Planescape: Adventures in the Multiverse

Tunneler. The eyestalk can burrow through solid rock at half its burrow speed and leaves a 10-foot-diameter tunnel in its wake.Multiattack. The eyestalk uses Eradication Gaze, if available, and makes

);{"diceNotation":"10d10", "rollType":"damage", "rollAction":"Eradication Gaze", "rollDamageType":"necrotic"} necrotic damage. If this damage reduces a creature to 0 hit points, its body becomes a

Astral Dreadnought Legacy

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

damage reduces it to 0 hit points or it is incapacitated, the astral dreadnought swallows it. The swallowed target, along with everything it is wearing and carrying, appears in an unoccupied space on

Yeenoghu

Monsters Mordenkainen Presents: Monsters of the Multiverse

. Yeenoghu causes an iron spike—5 feet tall and 1 inch in diameter—to burst from the ground at a point he can see within 100 feet of him. Any creature in the space where the spike emerges

this creature’s proficiency bonus plus its Strength modifier, reach 5 ft., one target. Hit: 1d4 + this creature’s Strength modifier piercing damage. Rampage. When this creature reduces a

Astral Dreadnought

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

", "rollAction":"Bite", "rollDamageType":"force"} force damage. If the target is a Huge or smaller creature and this damage reduces it to 0 hit points or it is incapacitated, the dreadnought swallows it. The

Yeenoghu Legacy

Monsters Out of the Abyss

. When Yeenoghu reduces a creature to 0 hit points with a melee attack on his turn, Yeenoghu can take a bonus action to move up to half his speed and make a bite attack.Multiattack. Yeenoghu makes three

same effect two rounds in a row. Yeenoghu causes an iron spike—5 feet tall and 1 inch in diameter—to burst from the ground at a point he can see within 100 feet of him. Any creature in

17. Hall of the Great Spirits

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

the west. The statuary that adorns the walls consists of four sculpted heads of animals. Each one is six feet above the floor and two to three feet in diameter. Opposite the passage that leads east is

easily, or the beak (AC 16, 25 hit points) can be broken off by dealing bludgeoning damage to it that reduces it to 0 hit points. If a character’s arm is caught in the beak when the beak is struck, that

20. Dead Eyes Watch Post

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

(three women and two men), and five bugbears. Blood Circle. Painted in blood on the middle of the floor is a 10-foot-diameter circle with ten equidistant spokes extending outward from its circumference

: Touching the arch with a nonmagical item made entirely of ferrous metal (such as an iron spike) reduces the item to powdered rust and opens the gate for 1 minute. Characters must be 9th level or

Yeenoghu

Compendium - Sources->Dungeons & Dragons->Monsters of the Multiverse

3/day each: dispel magic, fear, invisibility 1/day: teleport Bonus Actions Rampage. When Yeenoghu reduces a creature to 0 hit points with a melee attack, he moves up to half his speed and

feet tall and 1 inch in diameter—to burst from the ground at a point he can see within 100 feet of him. Any creature in the space where the spike emerges must make a DC 24 Dexterity saving throw. On a

Astral Dreadnought

Compendium - Sources->Dungeons & Dragons->Vecna: Eve of Ruin

Shift spell. The demiplane resembles a stone cave roughly 1,000 feet in diameter with a ceiling 100 feet high. Like a stomach, it contains the remains of past meals. The dreadnought can’t be harmed from

Weapon Attack: +16 to hit, reach 10 ft., one target. Hit: 36 (5d10 + 9) force damage. If the target is a Huge or smaller creature and this damage reduces it to 0 hit points or it has the incapacitated

Astral Dreadnought

Compendium - Sources->Dungeons & Dragons->Monsters of the Multiverse

that enables planar travel, such as the plane shift spell. The demiplane resembles a stone cave roughly 1,000 feet in diameter with a ceiling 100 feet high. Like a stomach, it contains the remains of

damage. If the target is a Huge or smaller creature and this damage reduces it to 0 hit points or it is incapacitated, the dreadnought swallows it. The swallowed target, along with everything it is

20. False Tomb

Compendium - Sources->Dungeons & Dragons->Tomb of Annihilation

sunlight, and creatures averse to sunlight are affected by it. The gargoyle heads are 5 feet tall and 5 feet wide, with mouths that are 2 feet in diameter. Behind each head, an airtight stone valve blocks a

damage. If this damage reduces the creature’s hit points to 0, it is crushed to a pulp; otherwise, the creature is shoved into the room. The block is impervious to damage and spells. When fully

14. Temple

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

room’s most prominent feature is the Steinfang, a 40-foot-long stalactite that hangs from the ceiling above the island. From a base 20 feet in diameter, it tapers to a rough point a few feet above the

magic weapon has no bonus to attack or damage rolls. A creature can attune to it, and the weapon enlarges or reduces to be an appropriate size for that creature. Once during this adventure, as an action

Astral Dreadnought

Compendium - Sources->Dungeons & Dragons->Mordenkainen's Tome of Foes

Visit ability. A creature can leave the demiplane only by using magic that enables planar travel, such as the plane shift spell. The demiplane resembles a stone cave roughly 1,000 feet in diameter with a

damage reduces it to 0 hit points or it is incapacitated, the astral dreadnought swallows it. The swallowed target, along with everything it is wearing and carrying, appears in an unoccupied space on

Black Cabin Locations

Compendium - Sources->Dungeons & Dragons->Icewind Dale: Rime of the Frostmaiden

several broken wine bottles, is a mostly incinerated skeleton and a round, frost-covered object about six inches in diameter. The important features of this room are the charred book, the partially

gold, and the pendant bears the symbol of two hands cupping the sun. Summer Star Summer Star. This magic item looks like a 6-inch-diameter gyroscope featuring two scorched rings inlaid with runes and a

Necropolis Locations (Y20-Y29)

Compendium - Sources->Dungeons & Dragons->Icewind Dale: Rime of the Frostmaiden

light dance like fireflies around this thirty-foot-diameter octagonal chamber. A large unlit brazier stands in the center of the room, and eight ten-foot-square alcoves line the walls, each filled with

-foot-diameter crystal sphere rests on an ornate stand. See appendix D for a description of the Ythryn mythallar and its magical properties. The first time a creature tries to attune to the mythallar

Mortuary Locations

Compendium - Sources->Dungeons & Dragons->Adventure Atlas: The Mortuary

facility the corpse they’re looking for lies. Arrival Chutes. Corpses slide into this chamber via eight 5-foot-diameter pneumatic tubes set into the south walls. Each corpse arrives on an examination

this effect reduces its hit point maximum to 0. A Humanoid that dies in the reservoir rises from its corpse as a hostile specter 1d4 hours later unless the Humanoid is restored to life or its body is

Tyrant's Spiral

Compendium - Sources->Dungeons & Dragons->Planescape: Adventures in the Multiverse->Turn of Fortune’s Wheel

devastation in a 150-foot cone. Any creature in that area must succeed on a DC 16 Dexterity saving throw or take 55 (10d10) necrotic damage. If this damage reduces a creature to 0 hit points, its

Nine Hells. It was placed here by Shemeshka’s servants to influence the modrons. Although the archdevil is dead, a vestige of its evil remains in its 3-foot-diameter, horned skull. The skull has the

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