monster starts with only activated from for light

Robe of Scintillating Colors

Magic Items Dungeon Master’s Guide

on attack rolls against you. Any creature in the Bright Light that can see you when the robe’s power is activated must succeed on a DC 15 Wisdom saving throw or have the Stunned condition until the effect ends.

dazzling hues until the end of your next turn. During this time, the robe sheds Bright Light in a 30-foot radius and Dim Light for an additional 30 feet, and creatures that can see you have Disadvantage

Candle of Invocation

Magic Items Dungeon Master’s Guide

This candle’s magic is activated when the candle is lit, which requires a Magic action. After burning for 4 hours, the candle is destroyed. You can snuff it out early for use at a later time

. Deduct the time it burned in increments of 1 minute from its total burn time. While lit, the candle sheds Dim Light in a 30-foot radius. While you are within that light, you have Advantage on D20 Test

Magmin

Monsters Monster Manual

worn or carried, it starts burning.FireIgnited Illumination. The magmin sets itself ablaze or extinguishes its flames. While ablaze, the magmin sheds Bright Light in a 10-foot radius and Dim Light for an additional 10 feet.

Cloaker

Monsters Monster Manual

using Wisdom as the spellcasting ability. The spell ends early if the cloaker starts or ends its turn in Bright Light.

Light Sensitivity. While in Bright Light, the cloaker has Disadvantage on attack rolls.Multiattack. The cloaker makes one Attach attack and two Tail attacks. Attach. Melee Attack Roll: +6

Fire Elemental

Monsters Monster Manual

":"1d10", "rollType":"damage", "rollAction":"Fire Form", "rollDamageType":"Fire"} Fire damage. Illumination. The elemental sheds Bright Light in a 30- foot radius and Dim Light for an additional 30 feet

":"Burn"}, reach 5 ft. Hit: 10 (2d6 + 3);{"diceNotation":"2d6+3", "rollType":"damage", "rollAction":"Burn", "rollDamageType":"Fire"} Fire damage. If the target is a creature or a flammable object, it starts burning.Fire, PoisonBludgeoning, Piercing, Slashing

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

Hunger of Hadar

Spells Player’s Handbook

is Difficult Terrain, and it is filled with strange whispers and slurping noises, which can be heard up to 30 feet away. No light, magical or otherwise, can illuminate the area, and creatures fully

within it have the Blinded condition. Any creature that starts its turn in the area takes 2d6 Cold damage. Any creature that ends its turn there must succeed on a Dexterity saving throw or take 2d6 Acid

Vampire Nightbringer

Monsters Monster Manual

Sunlight Hypersensitivity. The vampire takes 10 Radiant damage if it starts its turn in sunlight. While in sunlight, it has Disadvantage on attack rolls and ability checks.Multiattack. The vampire

", "rollDamageType":"Slashing"} Slashing damage plus 14 (4d6);{"diceNotation":"4d6", "rollType":"damage", "rollAction":"Shadow Strike", "rollDamageType":"Cold"} Cold damage.Cold, NecroticShadow Stealth. While in Dim Light or Darkness, the vampire takes the Hide action.

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

Staff of the Magi

Magic Items Dungeon Master’s Guide

number of charges above 50, the staff explodes as if you activated its Retributive Strike (see below). Spells. While holding the staff, you can cast one of the spells on the following table from it

Dispel Magic 3 Enlarge/Reduce 0 Fireball (level 7 version) 7 Flaming Sphere 2 Ice Storm 4 Invisibility 2 Knock 2 Light 0 Lightning Bolt (level 7 version) 7

Prismatic Wall

Spells Player’s Handbook

A shimmering, multicolored plane of light forms a vertical opaque wall—up to 90 feet long, 30 feet high, and 1 inch thick—centered on a point within range. Alternatively, you shape the

without effect. The wall sheds Bright Light within 100 feet and Dim Light for an additional 100 feet. You and creatures you designate when you cast the spell can pass through and be near the wall without

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

Imprisonment

Spells Player’s Handbook

similar object. Light can pass through the gemstone (allowing the target to see out and other creatures to see in), but nothing else can pass through by any means. Slumber. The target has the

true love, or defeating a specific monster. A Dispel Magic spell can end the spell only if it is cast with a level 9 spell slot, targeting either the prison or the component used to create it.

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

minute. To you, solid objects within that radius appear transparent and don’t prevent light from passing through themselves. The vision can penetrate 1 foot of stone, 1 inch of common metal, or up to

Vampire Infernalist

Monsters Astarion's Book of Hungers

vampire has the Incapacitated condition in its resting place, the vampire has the Paralyzed condition until the weapon is removed. Sunlight. The vampire takes 20 Radiant damage if it starts its turn in

course it is. —Astarion on Vampire Infernalists Vampire Infernalist Lairs Vampire infernalists lurk in gloomy libraries or ritual chambers, far from the sun’s light. The region

Crown of Horns

Magic Items Forgotten Realms: Adventures in Faerûn

instantly complete this transformation. Cone of Undeath. You can take a Magic action to unleash a wave of unholy light in a 60-foot Cone. Each creature in the Cone makes a DC 18 Constitution saving throw

crown, you emit an aura of terrifying energy in a 60-foot Emanation. A creature that enters this area for the first time on a turn or starts its turn there must succeed on a DC 16 Wisdom saving throw or

Robe of Scintillating Colors Legacy

Magic Items Basic Rules (2014)

rolls against you. In addition, any creature in the bright light that can see you when the robe's power is activated must succeed on a DC 15 Wisdom saving throw or become stunned until the effect ends.

hues until the end of your next turn. During this time, the robe sheds bright light in a 30-foot radius and dim light for an additional 30 feet. Creatures that can see you have disadvantage on attack

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

Sickening Radiance

Spells Xanathar's Guide to Everything

Dim, greenish light spreads within a 30-foot-radius sphere centered on a point you choose within range. The light spreads around corners, and it lasts until the spell ends. When a creature moves

into the spell's area for the first time on a turn or starts its turn there, that creature must succeed on a Constitution saving throw or take 4d10 radiant damage, suffer one level of exhaustion, and

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

biomancer has the following wizard spells prepared: Cantrips (at will): acid splash, light, mending, poison spray, shocking grasp 1st level (4 slots): detect magic, grease, shield 2nd level (3 slots

Candle of Invocation Legacy

Magic Items Basic Rules (2014)

Neutral good 14-15 Lawful evil 16-17 Lawful neutral 18-20 Lawful good The candle's magic is activated when the candle is lit, which requires an action. After burning for 4

dim light in a 30-foot radius. Any creature within that light whose alignment matches that of the candle makes attack rolls, saving throws, and ability checks with advantage. In addition, a cleric or

Flail Snail

Monsters Mordenkainen Presents: Monsters of the Multiverse

, any creature within the bright light and able to see the snail when this power is activated must succeed on a DC 15 Wisdom saving throw or be stunned until the light ends. Shell Defense. The flail

":"bludgeoning"} bludgeoning damage. Scintillating Shell (Recharges after a Short or Long Rest). The snail’s shell emits dazzling, colored light until the end of the snail’s next turn

Hellfire Weapon

Magic Items Baldur’s Gate: Descent into Avernus

This weapon is fashioned from infernal iron and traced with veins of hellfire that shed dim light in a 5-foot-radius. Any humanoid killed by an attack made with this weapon has its soul funneled

into the River Styx, where it’s reborn instantly as a lemure;lemure devil (described in the Monster Manual).

Flail Snail Legacy

Monsters Volo's Guide to Monsters

when this power is activated must succeed on a DC 15 Wisdom saving throw or be stunned until the light ends. Shell Defense. The flail snail withdraws into its shell, gaining a +4 bonus to AC until it emerges. It can emerge from its shell as a bonus action on its turn.Fire, Poison

(Recharges after a Short or Long Rest). The snail’s shell emits dazzling, colored light until the end of the snail’s next turn. During this time, the shell sheds bright light in a 30-foot radius

Maddening Darkness

Spells Xanathar's Guide to Everything

through this darkness. Nonmagical light, as well as light created by spells of 8th level or lower, can’t illuminate the area. Shrieks, gibbering, and mad laughter can be heard within the sphere

. Whenever a creature starts its turn in the sphere, it must make a Wisdom saving throw, taking 8d8 psychic damage on a failed save, or half as much damage on a successful one.

Senses Legacy

Rules

dim light within the radius as if it were bright light, and in darkness as if it were dim light. The monster can't discern color in darkness, only shades of gray. Many creatures that live underground

secret doors over and over again, or can be used when the DM wants to secretly determine whether the characters succeed at something without rolling dice, such as noticing a hidden monster. Special

Moonbeam Legacy

Spells Basic Rules (2014)

A silvery beam of pale light shines down in a 5-foot-radius, 40-foot-high cylinder centered on a point within range. Until the spell ends, dim light fills the cylinder. When a creature enters the

spell’s area for the first time on a turn or starts its turn there, it is engulfed in ghostly flames that cause searing pain, and it must make a Constitution saving throw. It takes 2d10 radiant

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

flames. The flames emit bright light in a 10-foot radius and dim light for an additional 10 feet. The flames are harmless to you and the weapon. When you hit with an attack using the blazing weapon

Psi Crystal

Magic Items Icewind Dale: Rime of the Frostmaiden

This crystal grants you telepathy for as long as you remain attuned to it. See the introduction of the Monster Manual for rules on how this telepathy works. The crystal also glows with a purplish

inner light while you are attuned to it. The higher your intelligence, the greater the light’s intensity and the greater the range of the telepathy (see the Psi Crystal Properties table). Psi

Hunger of Hadar Legacy

Spells Player’s Handbook (2014)

the duration. This void is filled with a cacophony of soft whispers and slurping noises that can be heard up to 30 feet away. No light, magical or otherwise, can illuminate the area, and creatures

fully within the area are blinded.The void creates a warp in the fabric of space, and the area is difficult terrain. Any creature that starts its turn in the area takes 2d6 cold damage. Any creature that

Witchlight Hand

Backgrounds The Wild Beyond the Witchlight

your time in the carnival. You know the other hands well, but the carnival’s owners—Mister Witch and Mister Light—remain mysterious to you even after all these years. Maybe you

companions. Statistics for the other companions appear in the Monster Manual. Carnival Companion d8 Companion 1 Old, cantankerous Witchlight hand 2 Young, impressionable Witchlight

Swarm of Cranium Rats Legacy

Monsters Volo's Guide to Monsters

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

number of feet equal to the chosen radius), or extinguish the light. Innate Spellcasting (Psionics). The swarm's innate spellcasting ability is Intelligence (spell save DC 13). As long as it has more

Daoud's Wondrous Lanthorn

Magic Items Quests from the Infinite Staircase

This artifact destroys wealth to provide light and protection. Wrought from the finest yellow gold, the lantern has four faces, and an unwavering amber flame burns within it. The faces of the lantern

lantern’s flame goes out, the creature attuned to it immediately dies. One exception to this rule exists (see the “Destroying the Lantern” section). Revealing Light. The lantern sheds

Basilisk Legacy

Monsters Basic Rules (2014)

Petrifying Gaze. If a creature starts its turn within 30 feet of the basilisk and the two of them can see each other, the basilisk can force the creature to make a DC 12 Constitution saving throw if

save. If the basilisk sees its reflection within 30 feet of it in bright light, it mistakes itself for a rival and targets itself with its gaze.Bite. Melee Weapon Attack: +5;{"diceNotation":"1d20+5

Wereraven

Monsters Curse of Strahd

doesn’t function at the start of the wereraven’s next turn. The wereraven dies only if it starts its turn with 0 hit points and doesn’t regenerate.Multiattack (Human or Hybrid Form

light weapons. They are reluctant to make bite attacks in raven form for fear of spreading their curse to those who don’t deserve it or who would abuse it. A Kindness of Wereravens. Wereravens

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