monster swarm with over against from for long

Pipes of the Sewers

Magic Items Dungeon Master’s Guide

24 hours. On a failed save, the swarm is swayed by the pipes’ music and becomes Friendly to you and your allies for as long as you continue to play the pipes each round as a Magic action. A

regain 1d3 expended charges daily at dawn. If you play the pipes as a Magic action, you can take a Bonus Action to expend 1 to 3 charges, calling forth one Swarm of Rats with each expended charge if

Hat of Many Spells

Magic Items Dungeon Master’s Guide

its normal casting time, and you can’t use this property again until you finish a Short or Long Rest. On a failed check, you fail to cast the spell and a random effect occurs instead

just happened. 56–60 A harmless swarm of butterflies fills a 10-foot Cube within 30 feet of yourself. The swarm disperses after 1 minute. 61–65 You pull a nonmagical object

Adult Silver Dragon

Monsters Monster Manual

with spell attacks): At Will: Detect Magic, Hold Monster, Ice Knife, Shapechange (Beast or Humanoid form only, no Temporary Hit Points gained from the spell, and no Concentration or Temporary Hit

use to take one of the following actions. The dragon regains all expended uses at the start of each of its turns. Chill. The dragon uses Spellcasting to cast Hold Monster. The dragon can’t take

Ancient Silver Dragon

Monsters Monster Manual

uses Spellcasting to cast Hold Monster. The dragon can’t take this action again until the start of its next turn. Cold Gale. Dexterity Saving Throw: DC 23, each creature in a 60-foot-long, 10

":"Spellcasting"} to hit with spell attacks): At Will: Detect Magic, Hold Monster, Ice Knife (level 2 version), Shapechange (Beast or Humanoid form only, no Temporary Hit Points gained from the spell, and

Colossus

Monsters Monster Manual

Advantage on saving throws against spells and other magical effects. Siege Monster. The colossus deals double damage to objects and structures.Multiattack. The colossus makes three attacks, using Slam or

"}. Dexterity Saving Throw: DC 26, each creature in a 300-foot-long, 10-foot-wide Line. Failure: 65 (10d12);{"diceNotation":"10d12", "rollType":"damage", "rollAction":"Divine Beam", "rollDamageType

Book of Vile Darkness

Magic Items Dungeon Master’s Guide

stone cracks and turns to powder if the book rests on it long enough. Whenever a creature that isn’t a Fiend or an Undead attunes to the Book of Vile Darkness, that creature makes a DC 17

remains with you only as long as you strive to work evil in the world. If you fail to perform at least one evil act within the span of 10 days, or if you willingly perform a good act, the book

Pipes of Pestilence

Magic Items Stranger Things: Welcome to the Hellfire Club

If you play these pipes as a Magic action, you summon one Swarm of Corrupted Rats in an unoccupied space within 60 feet of yourself. The swarm is Friendly to you and your allies for as long as you

continue to play the pipes each round as a Magic action. While Friendly, the swarm is under your control, obeys your commands, and takes no action other than to defend itself if you issue it no commands

Swarm of Cranium Rats Legacy

Monsters Volo's Guide to Monsters

, dominate monster Swarm. The swarm can occupy another creature's space and vice versa, and the swarm can move through any opening large enough for a Tiny rat. The swarm can't regain hit points or gain

Illumination. As a bonus action, the swarm can shed dim light from its brains in a 5-foot radius, increase the illumination to bright light in a 5- to 20-foot radius (and dim light for an additional

Kobold Inventor

Monsters Mordenkainen Presents: Monsters of the Multiverse

within 20 feet of it. A swarm of insects (centipedes);swarm of insects (centipedes; see the Monster Manual) with 11 hit points emerges from the basket and rolls initiative. At the end of each of the swarm

breaks open on impact. A swarm of rot grubs emerges from the shattered pot and remains a hazard in that square. Scorpion on a Stick. The kobold makes a melee attack with a scorpion (see the Monster

Pipes of the Sewers Legacy

Magic Items Basic Rules (2014)

long as you continue to play the pipes each round as an action. A friendly swarm obeys your commands. If you issue no commands to a friendly swarm, it defends itself but otherwise takes no actions. If

unless you threaten or harm them. The pipes have 3 charges. If you play the pipes as an action, you can use a bonus action to expend 1 to 3 charges, calling forth one swarm of rats with each expended

Cranium Rat Squeaker Swarm

Monsters Planescape: Adventures in the Multiverse

the spellcasting ability (spell save DC 13): At will: command,* detect thoughts,* sending* 1/day each: confusion,* dominate monster* *To cast this spell, the swarm must have more than half its hit

Psychic Messenger. The swarm can use its sending spell to target someone familiar to a creature in telepathic contact with the swarm. Swarm. The swarm can occupy another creature’s space and

Swarm of Zombie Limbs

Monsters Van Richten’s Guide to Ravenloft

Swarm. The swarm can occupy another creature’s space and vice versa, and the swarm can move through any opening large enough for a Tiny limb. The swarm can’t regain hit points or gain

temporary hit points. Unusual Nature. The swarm doesn’t require air, food, drink, or sleep.Multiattack. The swarm makes one Undead Mass attack and one Grasping Limbs attack. Undead Mass. Melee

Swarm of Cranium Rats

Monsters Mordenkainen Presents: Monsters of the Multiverse

constituents. The rats become smarter as a result, and retain their heightened intelligence for as long as the swarm persists. The swarm also awakens latent psionic abilities implanted within each cranium

Swarm. The swarm can occupy another creature’s space and vice versa, and the swarm can move through any opening large enough for a Tiny rat. The swarm can’t regain hit points or gain

Insect Repellent-Salve

Equipment

against giant insects or the vile swarm of insects;swarms of insects described in appendix A of the Monster Manual. A gourd or vial of salve, which sells for 1 gp, contains 20 applications of

Swarm of Gremishkas

Monsters Van Richten’s Guide to Ravenloft

Limited Spell Immunity. The swarm automatically succeeds on saving throws against spells of 3rd level or lower, and the attack rolls of such spells always miss it. Swarm. The swarm can occupy

another creature’s space and vice versa, and the swarm can move through any opening large enough for a Tiny gremishka. The swarm can’t regain hit points or gain temporary hit points.Bites. Melee

Swarm of Maggots

Monsters Van Richten’s Guide to Ravenloft

Swarm. The swarm can occupy another creature’s space and vice versa, and the swarm can move through any opening large enough for a Tiny maggot. The swarm can’t regain hit points or gain

temporary hit points.Infestation. Melee Weapon Attack: +3;{"diceNotation":"1d20+3","rollType":"to hit","rollAction":"Infestation"} to hit, reach 0 ft., one target in the swarm’s space. Hit: 10

Cranium Rat

Monsters Mordenkainen Presents: Monsters of the Multiverse

their heightened intelligence for as long as the swarm persists. The swarm also awakens latent psionic abilities implanted within each cranium rat by its mind flayer creators, bestowing upon the swarm

rats come together to form a swarm, they merge their minds into a single intelligence with the accumulated memories of all the swarm’s constituents. The rats become smarter as a result, and retain

Neogi Hatchling Swarm

Monsters Spelljammer: Adventures in Space

Spider Climb. The swarm can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check. Swarm. The swarm can occupy another creature’s space and vice

versa, and the swarm can move through any opening large enough for a Tiny neogi hatchling. The swarm can’t regain hit points or gain temporary hit points.Swarm of Bites. Melee Weapon Attack: +3

Swarm of Gibberlings

Monsters Quests from the Infinite Staircase

Aversion to Fire. If the swarm takes fire damage, it has disadvantage on attack rolls and ability checks until the end of its next turn. Incessant Gibberish. Any non-gibberling that is within 60

feet of the swarm and doesn’t have the deafened condition has disadvantage on Constitution saving throws to maintain concentration on spells and similar effects. Swarm. The swarm can occupy

Sofina

Monsters Thieves’ Gallery

each: Evard's black tentacles, finger of death, time stop Swarm of Meteors (1/Day). Sofina magically calls down a meteor swarm that detonates in four 40-foot-radius spheres, each one centered on a point

", "rollType":"damage", "rollAction":"Swarm of Meteors", "rollDamageType":"fire"} fire damage and 35 (10d6);{"diceNotation":"10d6", "rollType":"damage", "rollAction":"Swarm of Meteors", "rollDamageType

Gremishka

Monsters Van Richten’s Guide to Ravenloft

","rollType":"heal","rollAction":"Magic Allergy"} hit points. 5–6. The gremishka explodes and dies, and one swarm of gremishkas instantly appears in the space where this gremishka died. The swarm uses

overwhelm—or just get a bite of. Gremishkas have an unstable relationship with magic. Spells cast near a gremishka might rebound onto those nearby or cause the monster to explode, its scaly chunks

Kobold Inventor Legacy

Monsters Volo's Guide to Monsters

flames. Basket of Centipedes. The kobold throws a small basket into a 5-foot-square space within 20 feet of it. A swarm of insects (centipedes) with 11 hit points emerges from the basket and rolls

initiative. At the end of each of the swarm’s turns, there’s a 50 percent;{"diceNotation":"1d100","rollType":"roll","rollAction":"Dispersal"} chance that the swarm disperses. Green Slime Pot

Insect Repellent-Incense

Equipment

against giant insects or the vile swarm of insects;swarms of insects described in appendix A of the Monster Manual. A block of incense sells for 1 sp. When lit, it burns for 8 hours and repels normal insects within a 20-foot-radius centered on it.

Star Spawn Larva Mage Legacy

Monsters Mordenkainen’s Tome of Foes

attacks). It can innately cast the following spells, requiring no material components: At will: eldritch blast (3 beams, +3 bonus to each damage roll), minor illusion 3/day: dominate monster 1/day

: circle of death Return to Worms. When the larva mage is reduced to 0 hit points, it breaks apart into a swarm of insects in the same space. Unless the swarm is destroyed, the larva mage reforms from it

Arasta

Monsters Mythic Odysseys of Theros

attack with her claws. Swarm (Costs 2 Actions). Arasta causes two Swarm of Insects (Spiders) ;swarms of spiders (see the Monster Manual) to appear in unoccupied spaces within 5 feet of her. Toxic Web

ground ripples and bursts over the monster, revealing itself as a wave of countless spiders. The tiny arachnids swarm the larger horror, girding it in skittering bodies. Fighting Arasta as a mythic

Bel

Monsters Baldur’s Gate: Descent into Avernus

spellcasting ability is Charisma (spell save DC 23). Bel can innately cast the following spells, requiring no material components: At will: detect magic, fireball 3/day each: dispel magic, hold monster

, mirror image, mislead, raise dead, teleport, wall of fire 1/day each: imprisonment, meteor swarm Legendary Resistance (3/Day). If Bel fails a saving throw, he can choose to succeed instead. Magic

Zombie Plague Spreader

Monsters Van Richten’s Guide to Ravenloft

":"poison"} poison damage on a failed save, or half as much damage on a successful one. A Humanoid reduced to 0 hit points by this damage dies and rises as a zombie (see its stat block in the Monster

into a dragon’s maw until the monster chokes. In the course of their relentless marches, zombies might suffer all manner of trauma, potentially reducing them to masses of crawling limbs (see

Gibberling

Monsters Quests from the Infinite Staircase

. Loud and shrill, their exasperating nonsense distracts even the most focused creatures. Swarm of Gibberlings;Gibberling swarms are heard long before they are seen. The first gibberlings were spawned

Create Homunculus

Spells Xanathar's Guide to Everything

;s other components and touch them, transforming them into a special construct called a homunculus. The statistics of the homunculus are in the Monster Manual. It is your faithful companion, and it

dies if you die. Whenever you finish a long rest, you can spend up to half your Hit Dice if the homunculus is on the same plane of existence as you. When you do so, roll each die and add your

Baba Lysaga

Monsters Curse of Strahd

Shapechanger. Baba Lysaga can use an action to polymorph into a swarm of insects (flies), or back into her true form. While in swarm form, she has a walking speed of 5 feet and a flying speed of 30

":"1d8+4","rollType":"damage","rollAction":"Quarterstaff","rollDamageType":"bludgeoning"} bludgeoning damage if wielded with two hands. Summon Swarms of Insects (Recharges after a Short or Long Rest

Kalaraq Quori

Monsters Eberron: Rising from the Last War

throw or be cursed. The curse lasts until it's removed by a remove curse or greater restoration spell. The cursed target suffers 1 level of exhaustion every 24 hours, and finishing a long rest

can free the thrall from this control. Swarm of Eyes (Recharge 6);{"diceNotation":"1d6","rollType":"recharge","rollAction":"Swarm of Eyes"}. The quori creates a swarm of spectral eyes that fills a 30

Stirge Legacy

Monsters Basic Rules (2014)

movement. It does so after it drains 10 hit points of blood from the target or the target dies. A creature, including the target, can use its action to detach the stirge.This horrid monster looks like

a cross between a large bat and an oversized mosquito. Its legs end in sharp pincers, and its long, needle-like proboscis slashes the air as it seeks to feed on the blood of living creatures.

Kraul Warrior

Monsters Guildmasters’ Guide to Ravnica

","rollDamageType":"piercing"} piercing damage if used with two hands to make a melee attack.The kraul are an ascendant power group within the Golgari Swarm, long content to linger at the margins of

Zombie Clot

Monsters Van Richten’s Guide to Ravenloft

their disregard for their own well-being. A throng of zombies will douse a forest fire with their own ashes or march into a dragon’s maw until the monster chokes. In the course of their relentless

marches, zombies might suffer all manner of trauma, potentially reducing them to masses of crawling limbs (see swarm of zombie limbs), infecting them with terrible diseases (see zombie plague spreader), or crushing an entire horde into a single, rotting titan.Poison

Warlock of the Archfey Legacy

Monsters Volo's Guide to Monsters

;{"diceNotation":"1d20+6","rollType":"to hit","rollAction":"Spellcasting"} to hit with spell attacks). It regains its expended spell slots when it finishes a short or long rest. It knows the following warlock

, dominate beast, faerie fire, fear, hold monster, misty step, phantasmal force, seeming, sleepDagger. Melee or Ranged Weapon Attack: +3;{"diceNotation":"1d20+3","rollType":"to hit","rollAction":"Dagger

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