been before device cone radius

Thunderous Greatclub

Magic Items Dungeon Master’s Guide

the weapon against a hard surface to create a loud clap of thunder audible out to 300 feet. You also create a 30-foot Cone of thunderous energy. Each creature in the Cone must succeed on a DC 15

Strength saving throw or have the Prone condition. Nonmagical objects in the Cone that aren’t being worn or carried take 3d8 Thunder damage. Earthquake. As a Magic action, you can strike the weapon

Gem of Brightness

Magic Items Dungeon Master’s Guide

Light in a 30-foot radius and Dim Light for an additional 30 feet. This effect doesn’t expend a charge. It lasts until you take a Bonus Action to repeat the command word or until you use another

Word. You expend 5 charges and cause the gem to flare with intense light in a 30-foot Cone. Each creature in the Cone makes a saving throw as if struck by the beam created with the second command word. When all of the gem’s charges are expended, the gem becomes a nonmagical jewel worth 50 GP.

Adult White Dragon

Monsters Monster Manual

", "rollAction":"Cold Breath"}. Constitution Saving Throw: DC 19, each creature in a 60-foot Cone. Failure: 54 (12d8);{"diceNotation":"12d8", "rollType":"damage", "rollAction":"Cold Breath

. The dragon regains all expended uses at the start of each of its turns. Freezing Burst. Constitution Saving Throw: DC 14, each creature in a 30-foot-radius Sphere centered on a point the dragon can see

Ancient White Dragon

Monsters Monster Manual

", "rollAction":"Cold Breath"}. Constitution Saving Throw: DC 22, each creature in a 90-foot Cone. Failure: 63 (14d8);{"diceNotation":"14d8", "rollType":"damage", "rollAction":"Cold Breath

. The dragon regains all expended uses at the start of each of its turns. Freezing Burst. Constitution Saving Throw: DC 20, each creature in a 30-foot-radius Sphere centered on a point the dragon can see

Adult Green Dragon

Monsters Monster Manual

Throw: DC 18, each creature in a 60-foot Cone. Failure: 56 (16d6);{"diceNotation":"16d6", "rollType":"damage", "rollAction":"Poison Breath", "rollDamageType":"Poison"} Poison damage. Success: Half

creature in a 20-foot-radius Sphere centered on a point the dragon can see within 90 feet. Failure: 7 (2d6);{"diceNotation":"2d6", "rollType":"damage", "rollAction":"Noxious Miasma", "rollDamageType

Ancient Green Dragon

Monsters Monster Manual

Throw: DC 22, each creature in a 90-foot Cone. Failure: 77 (22d6);{"diceNotation":"22d6", "rollType":"damage", "rollAction":"Poison Breath", "rollDamageType":"Poison"} Poison damage. Success: Half

Throw: DC 21, each creature in a 30-foot-radius Sphere centered on a point the dragon can see within 90 feet. Failure: 17 (5d6);{"diceNotation":"5d6", "rollType":"damage", "rollAction":"Noxious Miasma

Ancient Bronze Dragon

Monsters Monster Manual

breath", "rollDamageType":"Lightning"} Lightning damage. Success: Half damage. Repulsion Breath. Strength Saving Throw: DC 23, each creature in a 30-foot Cone. Failure: The target is pushed up to 60 feet

its Speed, and it makes one Rend attack. Thunderclap. Constitution Saving Throw: DC 22, each creature in a 20-foot-radius Sphere centered on a point the dragon can see within 120 feet. Failure: 13 (3d8

Adult Bronze Dragon

Monsters Monster Manual

Breath", "rollDamageType":"Lightning"} Lightning damage. Success: Half damage. Repulsion Breath. Strength Saving Throw: DC 19, each creature in a 30-foot Cone. Failure: The target is pushed up to 60 feet

one Rend attack. Thunderclap. Constitution Saving Throw: DC 17, each creature in a 20-foot-radius Sphere centered on a point the dragon can see within 90 feet. Failure: 10 (3d6);{"diceNotation":"3d6

Elemental Cataclysm

Monsters Monster Manual

effects at random (roll 1d4;{"diceNotation":"1d4", "rollType":"roll", "rollAction":"Cataclymic Event"}): 1: Clinging Flames. Dexterity Saving Throw: DC 23, each creature in a 60-foot-radius Sphere

: 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

Ancient Spirit Dragon

Monsters Forgotten Realms: Adventures in Faerûn

22, each creature in a 90-foot Cone. Failure: 72 (16d8);{"diceNotation":"16d8", "rollType":"damage", "rollAction":"Ruinous Breath", "rollDamageType":"Necrotic"} Necrotic damage. Success: Half damage

: Legend Lore (as an action), Sequester Time-Warping Breath. Wisdom Saving Throw: DC 22, each creature that isn’t currently affected by this breath in a 90-foot Cone. Failure: The target’s Speed

Adult Spirit Dragon

Monsters Forgotten Realms: Adventures in Faerûn

a 60-foot Cone. Failure: 63 (14d8);{"diceNotation":"14d8", "rollType":"damage", "rollAction":"Ruinous Breath", "rollDamageType":"Necrotic"} Necrotic damage. Success: Half damage. Spellcasting. The

. Wisdom Saving Throw: DC 18, each creature that isn’t currently affected by this breath in a 60-foot Cone. Failure: The target’s Speed is halved, it can’t take Reactions, and it can

Elise

Monsters Van Richten’s Guide to Ravenloft

, though they can still die in other ways. The glowing device sheds light in a 10-foot radius and dim light for an additional 10 feet. While inside a creature, the device causes the creature to shed dim

achievement, Elise is a confused, frustrated soul who never wished for her current circumstances. Elise’s heart has been replaced with the Unbreakable Heart. If this device is removed, Elise dies

Zikran

Monsters Candlekeep Mysteries

shield, stoneskin* 5th level (3 slots): cone of cold, conjure elemental, scrying, wall of force 6th level (1 slot): globe of invulnerability 7th level (1 slot): teleport 8th level (1 slot): mind

device that controls the elemental cannon. This device, shown in the accompanying illustration, looks like a metal rod with a tip shaped like a bird’s head.Elemental Cannon. On initiative count 20

Gem of Brightness Legacy

Magic Items Basic Rules (2014)

bright light in a 30-foot radius and dim light for an additional 30 feet. This effect doesn't expend a charge. It lasts until you use a bonus action to repeat the command word or until you use another

word expends 5 charges and causes the gem to flare with blinding light in a 30- foot cone originating from it. Each creature in the cone must make a saving throw as if struck by the beam created with

Ythryn Mythallar

Magic Items Icewind Dale: Rime of the Frostmaiden

A mythallar looks like an enormous crystal ball held in an ornate cradle. The globe sheds bright light in a 300-foot radius and dim light for an additional 300 feet. The globe draws magic from the

hold. The largest mythallars are 150 feet in diameter. The Ythryn mythallar is a relatively small device—a mere 50 feet in diameter. To attune to this mythallar, a creature must finish a short

Gnome Ceremorph

Monsters Icewind Dale: Rime of the Frostmaiden

","rollType":"recharge","rollAction":"Mind Blast"}. The ceremorph magically emits psychic energy in a 60-foot cone. Each creature in that area must succeed on a DC 15 Intelligence saving throw or take 22

ceremorph often carries a home-built device that functions as a laser pistol (see “Firearms” in the Dungeon Master’s Guide). This weapon is powered by an energy cell, which enables

Investiture of Ice

Spells Elemental Evil Player's Companion

created by ice or snow without spending extra movement. The ground in a 10-foot radius around you is icy and is difficult terrain for creatures other than you. The radius moves with you. You can

use your action to create a 15-foot cone of freezing wind extending from your outstretched hand in a direction you choose. Each creature in the cone must make a Constitution saving throw. A creature

Horn of Beckoning Death

Magic Items Legendary Magic Items

Resembling a small dragon’s horn, this arcane device glows with a hellish internal light when held. As an action while holding this horn, you can invoke a necromantic effect called the

Beckoning Death. The Beckoning Death arrives at the start of your next turn and manifests as a crimson cloud of smoke that fills a 30-foot-radius sphere centered on the horn. The sphere doesn’t move

Smoke Mephit Legacy

Monsters Monster Manual (2014)

Death Burst. When the mephit dies, it leaves behind a cloud of smoke that fills a 5-foot-radius sphere centered on its space. The sphere is heavily obscured. Wind disperses the cloud, which otherwise

","rollDamageType":"slashing"} slashing damage. Cinder Breath (Recharge 6);{"diceNotation":"1d6","rollType":"recharge","rollAction":"Cinder Breath"}. The mephit exhales a 15-foot cone of smoldering ash. Each

Smoke Mephit (Summoner Variant) Legacy

Monsters Monster Manual (2014)

Death Burst. When the mephit dies, it leaves behind a cloud of smoke that fills a 5-foot-radius sphere centered on its space. The sphere is heavily obscured. Wind disperses the cloud, which otherwise

","rollDamageType":"slashing"} slashing damage. Cinder Breath (Recharge 6);{"diceNotation":"1d6","rollType":"recharge","rollAction":"Cinder Breath"}. The mephit exhales a 15-foot cone of smoldering ash. Each

Hollyphant

Monsters Baldur’s Gate: Descent into Avernus

Aura of Invulnerability. An invisible aura forms a 10-foot-radius sphere around the hollyphant for as long as it lives. Any spell of 5th level or lower cast from outside the barrier can't affect

, creating a trumpet sound that can be heard out to a range of 600 feet. The trumpet also creates a 30-foot cone of energy that has one of the following effects, chosen by the hollyphant: Trumpet of Blasting

Adult Red Dragon Legacy

Monsters Basic Rules (2014)

hours. Fire Breath (Recharge 5–6);{"diceNotation":"1d6","rollType":"recharge","rollAction":"Fire Breath"}. The dragon exhales fire in a 60-foot cone. Each creature in that area must make a DC 21

point on the ground the dragon can see within 120 feet of it, creating a 20-foot-high, 5-foot-radius geyser. Each creature in the geyser’s area must make a DC 15 Dexterity saving throw, taking

Ancient Red Dragon Legacy

Monsters Basic Rules (2014)

24 hours. Fire Breath (Recharge 5–6);{"diceNotation":"1d6","rollType":"recharge","rollAction":"Fire Breath"}. The dragon exhales fire in a 90-foot cone. Each creature in that area must make a DC 24

erupts from a point on the ground the dragon can see within 120 feet of it, creating a 20-foot-high, 5-foot-radius geyser. Each creature in the geyser’s area must make a DC 15 Dexterity saving

Mizzium Apparatus

Magic Items Guildmasters’ Guide to Ravnica

Innovation is a dangerous pursuit, at least the way the mages of the Izzet League engage in it. As protection against the risk of an experiment going awry, they have developed a device to help

stinking cloud 4th-Level Spells d4 Spell 1 confusion 2 conjure minor elementals 3 Evard's black tentacles 4 ice storm 5th-Level Spells d4 Spell 1 animate objects 2 cloudkill 3 cone of cold 4 flame strike

Adult Red Dracolich Legacy

Monsters Monster Manual (2014)

Breath"}. The dracolich exhales fire in a 60-foot cone. Each creature in that area must make a DC 21 Dexterity saving throw, taking 63 (18d6);{"diceNotation":"18d6","rollType":"damage","rollAction":"Fire

-foot-high, 5-foot-radius geyser. Each creature in the geyser’s area must make a DC 15 Dexterity saving throw, taking 21 (6d6) fire damage on a failed save, or half as much damage on a successful

Mizzium Mortar

Magic Items Guildmasters’ Guide to Ravnica

charges daily at dawn. Molten Spray. You can expend 1 charge as an action to loose a 30-foot cone of molten mizzium. Each creature in the area must make a DC 15 Dexterity saving throw, taking 5d4 fire

damage on a failed save, or half as much damage on a successful one. Mizzium Bombard. You can expend 3 charges as an action to launch a hail of molten projectiles in a 20-foot-radius, 40-foot-high

Staff of Power Legacy

Magic Items Basic Rules (2014)

save DC and spell attack bonus: cone of cold (5 charges), fireball (5th-level version, 5 charges), globe of invulnerability (6 charges), hold monster (5 charges), levitate (2 charges), lightning bolt

against a solid surface, performing a retributive strike. The staff is destroyed and releases its remaining magic in an explosion that expands to fill a 30-foot-radius sphere centered on it. You have

Adult Bronze Dragon Legacy

Monsters Basic Rules (2014)

, or half as much damage on a successful one. Repulsion Breath. The dragon exhales repulsion energy in a 30-foot cone. Each creature in that area must succeed on a DC 19 Strength saving throw. On a

radius centered on that point must make a DC 15 Constitution saving throw or take 5 (1d10);{"diceNotation":"1d10","rollType":"damage","rollAction":"Thunderclap","rollDamageType":"thunder"} thunder

Ancient Bronze Dragon Legacy

Monsters Basic Rules (2014)

, or half as much damage on a successful one. Repulsion Breath. The dragon exhales repulsion energy in a 30-foot cone. Each creature in that area must succeed on a DC 23 Strength saving throw. On a

radius centered on that point must make a DC 15 Constitution saving throw or take 5 (1d10);{"diceNotation":"1d10","rollType":"damage","rollAction":"Thunderclap","rollDamageType":"thunder"} thunder

Ancient Gold Dragon Legacy

Monsters Basic Rules (2014)

":"recharge","rollAction":"Breath Weapons"}. The dragon uses one of the following breath weapons. Fire Breath. The dragon exhales fire in a 90-foot cone. Each creature in that area must make a DC 24

one. Weakening Breath. The dragon exhales gas in a 90-foot cone. Each creature in that area must succeed on a DC 24 Strength saving throw or have disadvantage on Strength-based attack rolls, Strength

Ancient Silver Dragon Legacy

Monsters Basic Rules (2014)

uses one of the following breath weapons. Cold Breath. The dragon exhales an icy blast in a 90-foot cone. Each creature in that area must make a DC 24 Constitution saving throw, taking 67 (15d8

exhales paralyzing gas in a 90-foot cone. Each creature in that area must succeed on a DC 24 Constitution saving throw or be paralyzed for 1 minute. A creature can repeat the saving throw at the end of each

Adult Gold Dragon Legacy

Monsters Basic Rules (2014)

","rollAction":"Breath Weapons"}. The dragon uses one of the following breath weapons. Fire Breath. The dragon exhales fire in a 60-foot cone. Each creature in that area must make a DC 21 Dexterity

. Weakening Breath. The dragon exhales gas in a 60-foot cone. Each creature in that area must succeed on a DC 21 Strength saving throw or have disadvantage on Strength-based attack rolls, Strength checks

Adult Silver Dragon Legacy

Monsters Basic Rules (2014)

of the following breath weapons. Cold Breath. The dragon exhales an icy blast in a 60-foot cone. Each creature in that area must make a DC 20 Constitution saving throw, taking 58 (13d8

paralyzing gas in a 60-foot cone. Each creature in that area must succeed on a DC 20 Constitution saving throw or be paralyzed for 1 minute. A creature can repeat the saving throw at the end of each of its

Cinder Hulk

Monsters Bigby Presents: Glory of the Giants

Death Burst. When the cinder hulk dies, it leaves behind a cloud of cinders and smoke that fills a 10-foot-radius sphere centered on its space. The sphere is heavily obscured. Any creature that moves

);{"diceNotation":"1d6", "rollType":"recharge", "rollAction":"Wave of Cinders"}. The cinder hulk emits a wave of smoldering ash from its face, hands, or chest in a 30-foot cone. Each creature in that area must make

Mighty Servant of Leuk-o

Magic Items Tasha’s Cauldron of Everything

conjecture than fact, often referring to otherworldly beings, the mysterious Barrier Peaks in Oerth, and the supposedly related device known as the Machine of Lum the Mad. The best details on the device

’s origins and operation can be found in the Mind of Metal, a tome of artificer’s secrets that connects the device to the traditions of the lost Olman people, and which was written by Lum the

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