measured starts with only around flashes for light

Mirror

Equipment

A handheld steel Mirror is useful for personal cosmetics but also for peeking around corners and reflecting light as a signal.

Robe of Eyes

Magic Items Dungeon Master’s Guide

This robe is adorned with eyelike patterns. While you wear the robe, you gain the following benefits: All-Around Vision. The robe gives you Advantage on Wisdom (Perception) checks that rely on sight

. Special Senses. You have Darkvision and Truesight, both with a range of 120 feet. Drawbacks. A Light spell cast on the robe or a Daylight spell cast within 5 feet of the robe gives you the Blinded

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

Quarterstaff of the Acrobat

Magic Items Dungeon Master’s Guide

You have a +2 bonus to attack rolls and damage rolls made with this magic weapon. While holding this weapon, you can cause it to emit green Dim Light out to 10 feet, either as a Bonus Action or

after you roll Initiative, or you can extinguish the light as a Bonus Action. While holding this weapon, you can take a Bonus Action to alter its form, turning it into a 6-inch rod (for ease of storage

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

Shadow Dragon (Huge)

Monsters Monster Manual

Resistances. See Living Shadow. Legendary Resistance (3/Day, or 4/Day in Lair). If the dragon fails a saving throw, it can choose to succeed instead. Living Shadow. While in Dim Light or Darkness

its next turn.Shadow Dragon Lairs Shadow dragons lair in places of darkness and despair, such as accursed ruins, the depths of the Underdark, or the Shadowfell. The region around a shadow dragon

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

Delayed Blast Fireball

Spells Player’s Handbook

A beam of yellow light flashes from you, then condenses at a chosen point within range as a glowing bead for the duration. When the spell ends, the bead explodes, and each creature in a 20-foot

Shadow Dragon (Large)

Monsters Monster Manual

Resistances. See Living Shadow. Legendary Resistance (3/Day, or 4/Day in Lair). If the dragon fails a saving throw, it can choose to succeed instead. Living Shadow. While in Dim Light or Darkness

its next turn.Shadow Dragon Lairs Shadow dragons lair in places of darkness and despair, such as accursed ruins, the depths of the Underdark, or the Shadowfell. The region around a shadow dragon

Leomund's Tiny Hut

Spells Player’s Handbook

A 10-foot Emanation springs into existence around you and remains stationary for the duration. The spell fails when you cast it if the Emanation isn’t big enough to fully encapsulate all

the spell ends, you can command the interior to have Dim Light or Darkness (no action required). The Emanation is opaque from the outside and of any color you choose, but it’s transparent from the inside. The spell ends early if you leave the Emanation or if you cast it again.

Hallow

Spells Player’s Handbook

You touch a point and infuse an area around it with holy or unholy power. The area can have a radius up to 60 feet, and the spell fails if the radius includes an area already under the effect of

. Darkness. Darkness fills the area. Normal light, as well as magical light created by spells of a level lower than this spell, can’t illuminate the area. Daylight. Bright light fills the area

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.

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

Kindori

Monsters Spelljammer: Adventures in Space

by sending flashes of light from their eyes and draw their nourishment from the light of suns and stars. A kindori is large enough to have its own gravity plane and air envelope, enabling smaller

body is dotted with small eyes that can emit bright beams of light, which the creature uses to disorient predators before making its escape. Kindori communicate with one another over long distances

Darkling