monster starts with only affect for for least

Helm of Brilliance

Magic Items Dungeon Master’s Guide

Emanation is filled with Dim Light. Any Undead that starts its turn in that area takes 1d6 Radiant damage. Fire Opal Flames. As long as the helm has at least one fire opal, you can take a Magic action

. You gain the following benefits while wearing the helm. Diamond Light. As long as it has at least one diamond, the helm emits a 30-foot Emanation. When at least one Undead is within that area, the

Prismatic Wall

Spells Player’s Handbook

harm. If another creature that can see the wall moves within 20 feet of it or starts its turn there, the creature must succeed on a Constitution saving throw or have the Blinded condition for 1 minute

, in order from red to violet, by means specific to each layer. If a layer is destroyed, it is gone for the duration. Antimagic Field has no effect on the wall, and Dispel Magic can affect only the

Sea Hag

Monsters Monster Manual

Amphibious. The hag can breathe air and water. Coven Magic. While within 30 feet of at least two hag allies, the hag can cast one of the following spells, requiring no Material components, using the

finish a Long Rest before using this trait to cast that spell again. Vile Appearance. Wisdom Saving Throw: DC 11, any Beast or Humanoid that starts its turn within 30 feet of the hag and can see the hag

Pit Fiend

Monsters Monster Manual

Hells. Fear Aura. The pit fiend emanates an aura in a 20-foot Emanation while it doesn’t have the Incapacitated condition. Wisdom Saving Throw: DC 21, any enemy that starts its turn in the

"}. The pit fiend casts Fireball (level 5 version) twice, requiring no Material components and using Charisma as the spellcasting ability (spell save DC 21). It can replace one Fireball with Hold Monster (level 7 version) or Wall of Fire.Fire, PoisonCold

Elemental Cataclysm

Monsters Monster Manual

). If the cataclysm fails a saving throw, it can choose to succeed instead. Siege Monster. The cataclysm deals double damage to objects and structures.Multiattack. The cataclysm makes two Elemental Burst

: Half damage. Failure or Success: The target starts burning.2: Freezing Waves. Strength Saving Throw: DC 23, each creature in a 90-foot Cone. Failure: 22 (5d8);{"diceNotation":"5d8", "rollType":"damage

Symbol

Spells Player’s Handbook

triggers include opening that object or seeing the glyph. You can refine the trigger so that only creatures of certain types activate it (for example, the glyph could be set to affect Aberrations). You can

Disadvantage on attack rolls and ability checks. Fear. Each target must succeed on a Wisdom saving throw or have the Frightened condition for 1 minute. While Frightened, the target must move at least 30

Book of Vile Darkness

Magic Items Dungeon Master’s Guide

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

attuned to the book, you can cast the following spells (save DC 18) from it: Animate Dead Circle of Death Dominate Monster Finger of Death Once you use the book to cast a spell, you can’t

Eye and Hand of Vecna

Magic Items Dungeon Master’s Guide

Clairvoyance 2 Crown of Madness 1 Disintegrate 4 Dominate Monster 5 Eyebite 4 X-ray Vision. You can take a Magic action to gain X-ray vision with a range of 30 feet for 1

. You have Immunity to Poison damage and the Poisoned condition. Regeneration. If you start your turn with at least 1 Hit Point, you regain 1d10 Hit Points. Wish. You can cast Wish. Once used, this

Helm of Brilliance Legacy

Magic Items Basic Rules (2014)

one diamond, the helm emits dim light in a 30-foot radius when at least one undead is within that area. Any undead that starts its turn in that area takes 1d6 radiant damage. As long as the helm has

: daylight (opal), fireball (fire opal), prismatic spray (diamond), or wall of fire (ruby). The gem is destroyed when the spell is cast and disappears from the helm. As long as it has at least

Molydeus (Summoner Variant)

Monsters Mordenkainen Presents: Monsters of the Multiverse

. If the target has at least one head and the molydeus rolled a 20 on the attack roll, the target is decapitated and dies if it can’t survive without that head. A target is immune to this effect

maximum is reduced by an amount equal to the damage taken. This reduction lasts until the target finishes a long rest. The target transforms into a manes (see the Monster Manual) if this reduces its hit

Boneless

Monsters Van Richten’s Guide to Ravenloft

Compression. The boneless can move through any opening at least 1 inch wide without squeezing. It can also squeeze to fit into a space that a Tiny creature could fit in. Unusual Nature. The boneless

scraps of failed experiments, necromantic slurries, heaps of discarded hair, abattoirs, and charnel concoctions. These origins don’t affect a boneless’s statistics but lend it distinct forms

Molydeus

Monsters Mordenkainen Presents: Monsters of the Multiverse

. If the target has at least one head and the molydeus rolled a 20 on the attack roll, the target is decapitated and dies if it can’t survive without that head. A target is immune to this effect

maximum is reduced by an amount equal to the damage taken. This reduction lasts until the target finishes a long rest. The target transforms into a manes (see the Monster Manual) if this reduces its hit

Yeth Hound Legacy

Monsters Volo's Guide to Monsters

Keen Hearing and Smell. The yeth hound has advantage on Wisdom (Perception) checks that rely on hearing or smell. Sunlight Banishment. If the yeth hound starts its turn in sunlight, it is transported

, whereupon it typically sets out to find its pack or its master. The hound is visible on the Material Plane while it is in the Border Ethereal, and vice versa, but it can't affect or be affected by anything on

Goristro Legacy

Monsters Monster Manual (2014)

Charge. If the goristro moves at least 15 feet straight toward a target and then hits it with a gore attack on the same turn, the target takes an extra 38 (7d10);{"diceNotation":"7d10","rollType

Monster. The goristro deals double damage to objects and structures.Multiattack. The goristro makes three attacks: two with its fists and one with its hoof. Fist. Melee Weapon Attack: +13;{"diceNotation

Cloud Giant Ghost

Monsters Candlekeep Mysteries

the ghost’s next turn. The ghost dies only if it starts its turn with 0 hit points and doesn’t regenerate.Multiattack. The ghost makes two melee attacks. Spectral Weapon. Melee Weapon

Border Ethereal, and vice versa, yet it can’t affect or be affected by anything on the other plane. Spellcasting. The ghost casts one of the following spells, using Charisma as the spellcasting

Red Slaad Legacy

Monsters Monster Manual (2014)

Magic Resistance. The slaad has advantage on saving throws against spells and other magical effects. Regeneration. The slaad regains 10 hit points at the start of its turn if it has at least 1 hit

at a time. Over three months, the egg moves to the chest cavity, gestates, and forms a slaad tadpole. In the 24-hour period before giving birth, the host starts to feel unwell, its speed is halved

Yeth Hound

Monsters Mordenkainen Presents: Monsters of the Multiverse

Sunlight Banishment. If the yeth hound starts its turn in sunlight, it is transported to the Ethereal Plane. While sunlight shines on the spot from which it vanished, the hound must remain in the

the Border Ethereal, and vice versa, but it can’t affect or be affected by anything on the other plane. Once it is adjacent to its master or a pack mate that is on the Material Plane, a yeth

Quetzalcoatlus

Monsters Mordenkainen Presents: Monsters of the Multiverse

quetzalcoatlus flew least 30 feet toward the target immediately before the hit, the target takes an extra 10 (3d6);{"diceNotation":"3d6", "rollType":"damage", "rollAction":"Bite", "rollDamageType":"piercing

"} piercing damage.This giant relative of the pteranodon has a wingspan exceeding 30 feet. Although it can walk like a quadruped, it is more comfortable in the air. Dinosaurs The Monster Manual has statistics for several kinds of dinosaurs.

Velociraptor

Monsters Mordenkainen Presents: Monsters of the Multiverse

Pack Tactics. The velociraptor has advantage on an attack roll against a creature if at least one of the velociraptor’s allies is within 5 feet of the creature and the ally isn’t

damage.This feathered dinosaur is about the size of a large turkey. It is an aggressive predator and often hunts in packs to bring down larger prey. Dinosaurs The Monster Manual has statistics for several kinds of dinosaurs.

Stench Kow Legacy

Monsters Volo's Guide to Monsters

Charge. If the cow moves at least 20 feet straight toward a target and then hits it with a gore attack on the same turn, the target takes an extra 7 (2d6);{"diceNotation":"2d6","rollType":"damage

","rollAction":"Charge","rollDamageType":"piercing"} piercing damage. Stench. Any creature other than a stench kow that starts its turn within 5 feet of the stench kow must succeed on a DC 12 Constitution

Kobold Vampire Spawn

Monsters Icewind Dale: Rime of the Frostmaiden

Pack Tactics. The vampire has advantage on an attack roll against a creature if at least one of the vampire’s allies is within 5 feet of the creature and the ally isn’t incapacitated

. Regeneration. The vampire regains 10 hit points at the start of its turn if it has at least 1 hit point and isn’t in sunlight or running water. If the vampire takes radiant damage or damage from

Biomancer

Monsters Guildmasters’ Guide to Ravnica

Bolstering Presence. The biomancer magically emanates life-giving energy within 30 feet of itself. Any ally of the biomancer that starts its turn there regains 5 (1d10);{"diceNotation":"1d10

, polymorph 5th level (2 slots): cone of cold, creation, hold monster 6th level (1 slot): move earth, wall of ice 7th level (1 slot): prismatic spray 8th level (1 slot): control weatherScimitar. Melee

Agony the Ghost

Monsters Spelljammer: Adventures in Space

object. Crew of the Last Breath. The following rules apply to Agony the ghost: As long as the Last Breath has at least 1 hit point, the ghost can’t be permanently slain. If the ghost is reduced

to 0 hit points and the ship has at least 1 hit point, the ghost re-forms 24 hours later in the ship’s cargo hold with all its hit points. If it moves more than 100 feet from the Last Breath

Bael Legacy

Monsters Mordenkainen’s Tome of Foes

Dreadful. Bael can use a bonus action to appear dreadful until the start of his next turn. Each creature, other than a devil, that starts its turn within 10 feet of Bael must succeed on a DC 22

, wall of fire 1/day each: dominate monster, symbol (stunning only) Legendary Resistance (3/Day). If Bael fails a saving throw, he can choose to succeed instead. Magic Resistance. Bael has advantage

Barbatos

Monsters Infernal Machine Rebuild

Rust Monster Cloak. Any nonmagical weapon made of metal that hits Barbatos corrodes. After dealing damage, the weapon takes a permanent and cumulative −1 penalty to damage rolls. If its penalty drops

. If Barbatos takes acid or fire damage, this trait doesn't function at the start of Barbatos's next turn. Barbatos dies only if he starts his turn with 0 hit points and doesn't regenerate. Spellcasting

Zombie Plague Spreader

Monsters Van Richten’s Guide to Ravenloft

success, the zombie drops to 1 hit point instead. Unusual Nature. The zombie doesn’t require air, food, drink, or sleep. Viral Aura. Any creature that starts its turn within 10 feet of the

":"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

Pit Fiend Legacy

Monsters Basic Rules (2014)

Fear Aura. Any creature hostile to the pit fiend that starts its turn within 20 feet of the pit fiend must make a DC 21 Wisdom saving throw, unless the pit fiend is incapacitated. On a failed save

ability is Charisma (spell save DC 21). The pit fiend can innately cast the following spells, requiring no material components: At will: detect magic, fireball 3/day each: hold monster, wall of

Rutterkin

Monsters Mordenkainen Presents: Monsters of the Multiverse

Immobilizing Fear. When a creature that isn’t a demon starts its turn within 30 feet of one or more rutterkins, that creature must make a DC 11 Wisdom saving throw. The creature has

poisoned in this way, it dies and instantly transforms into a living manes (see the Monster Manual). The transformation can be undone only by a wish spell.Rutterkins are warped demons that roam the Abyss in

Barghest Legacy

Monsters Volo's Guide to Monsters

wearing or carrying isn't transformed. The barghest reverts to its true form if it dies. Fire Banishment. When the barghest starts its turn engulfed in flames that are at least 10 feet high or wide

Sahuagin Coral Smasher

Monsters Ghosts of Saltmarsh

it needs to be submerged at least once every 4 hours to avoid suffocating. Shark Telepathy. The coral smasher can magically command any shark within 120 feet of it, using a limited telepathy. Siege

Monster. The coral smasher deals double damage to objects and structures.Multiattack. The coral smasher makes two attacks with its warhammer, or one attack with its bite and one with its claws

Sea Lion

Monsters Tales from the Yawning Portal

roll against a creature if at least one of the sea lion’s allies is within 5 feet of the creature and the ally isn’t incapacitated. Swimming Leap. With a 10-foot swimming start, the sea

","rollAction":"Claw","rollDamageType":"piercing"} piercing damage.A sea lion is a fearsome monster with the head and forepaws of a lion and the lower body and tail of a fish. Adventurers who delve beneath

Deinonychus

Monsters Mordenkainen Presents: Monsters of the Multiverse

Pounce. If the deinonychus moves at least 20 feet straight toward a creature and then hits it with a Claw attack on the same turn, that target must succeed on a DC 12 Strength saving throw or be

);{"diceNotation":"1d8+2", "rollType":"damage", "rollAction":"Claw", "rollDamageType":"slashing"} slashing damage.This larger cousin of the velociraptor kills by gripping its target with its claws and feeding. Dinosaurs The Monster Manual has statistics for several kinds of dinosaurs.

Prismatic Wall Legacy

Spells Basic Rules (2014)

you designate at the time you cast the spell can pass through and remain near the wall without harm. If another creature that can see the wall moves to within 20 feet of it or starts its turn there

duration of the spell. Antimagic field has no effect on the wall, and dispel magic can affect only the violet layer. 1. Red. The creature takes 10d6 fire damage on a failed save, or half as much

Doomguard Doom Lord

Monsters Planescape: Adventures in the Multiverse

Aura of Doom. Any creature that starts its turn within 10 feet of the doom lord must make a DC 16 Constitution saving throw, taking 18 (4d8);{"diceNotation":"4d8", "rollType":"damage", "rollAction

suppress or resume this aura at the start of its turn (no action required). Siege Monster. The doom lord deals double damage to objects and structures.Multiattack. The doom lord makes two Entropic

Stench Kow

Monsters Mordenkainen Presents: Monsters of the Multiverse

Stench. Any creature other than a stench kow that starts its turn within 5 feet of the stench kow must succeed on a DC 12 Constitution saving throw or be poisoned until the start of the creature

least 20 feet straight toward the target immediately before the hit, the target takes an extra 7 (2d6);{"diceNotation":"2d6", "rollType":"damage", "rollAction":"Gore", "rollDamageType":"piercing

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