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Returning 35 results for 'barrier beam diffusing cause reveals'.
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Magic Items
Dungeon Master’s Guide
function of the gem.
Second Command Word. You expend 1 charge and cause the gem to fire a brilliant beam of light at one creature you can see within 60 feet of yourself. The creature must succeed on a
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.
Spells
Player’s Handbook
duration. It seems real, including sounds, smells, and temperature appropriate to the thing depicted, but it can’t deal damage or cause conditions.
If you are within range of the illusion, you can
take a Magic action to cause the image to move to any other spot within range. As the image changes location, you can alter its appearance so that its movements appear natural for the image. For
Spells
Player’s Handbook
You sense any trap within range that is within line of sight. A trap, for the purpose of this spell, includes any object or mechanism that was created to cause damage or other danger. Thus, the spell
would sense the Alarm or Glyph of Warding spell or a mechanical pit trap, but it wouldn’t reveal a natural weakness in the floor, an unstable ceiling, or a hidden sinkhole.
This spell reveals
Spells
Player’s Handbook
is purely visual; it isn’t accompanied by sound, smell, or other sensory effects.
As a Magic action, you can cause the image to move to any spot within range. As the image changes location, you
.
Physical interaction with the image reveals it to be an illusion, since things can pass through it. A creature that takes a Study action to examine the image can determine that it is an illusion with a
Magic Items
Dungeon Master’s Guide
to cause one weapon you are holding to burst into 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
and is then destroyed. Each creature within a 60-foot Emanation originating from you must succeed on a DC 17 Dexterity saving throw or be struck by a beam, taking Radiant damage equal to the number of gems in the helm.
Gem of Brightness
Legacy
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Magic Items
Basic Rules (2014)
This prism has 50 charges. While you are holding it, you can use an action to speak one of three command words to cause one of the following effects:
The first command word causes the gem to shed
function of the gem.
The second command word expends 1 charge and causes the gem to fire a brilliant beam of light at one creature you can see within 60 feet of you. The creature must succeed on a
Moonbeam
Legacy
This doesn't reflect the latest rules and lore.
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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
Silent Image
Legacy
This doesn't reflect the latest rules and lore.
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Spells
Basic Rules (2014)
is purely visual; it isn't accompanied by sound, smell, or other sensory effects.
You can use your action to cause the image to move to any spot within range. As the image changes location, you can
.
Physical interaction with the image reveals it to be an illusion, because things can pass through it. A creature that uses its action to examine the image can determine that it is an illusion with a
Major Image
Legacy
This doesn't reflect the latest rules and lore.
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Spells
Basic Rules (2014)
duration. It seems completely real, including sounds, smells, and temperature appropriate to the thing depicted. You can't create sufficient heat or cold to cause damage, a sound loud enough to deal
thunder damage or deafen a creature, or a smell that might sicken a creature (like a troglodyte's stench).
As long as you are within range of the illusion, you can use your action to cause the image to
Adult Brass Dragon
Legacy
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Monsters
Basic Rules (2014)
to cause one of the following effects:
A strong wind blows around the dragon. Each creature within 60 feet of the dragon must succeed on a DC 15 Strength saving throw or be pushed 15 feet away from
illusion with a successful DC 20 Intelligence (Investigation) check. Any physical interaction with an image reveals it to be an illusion, because objects pass through it.
Whenever a creature with an
Ancient Brass Dragon
Legacy
This doesn't reflect the latest rules and lore.
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Monsters
Basic Rules (2014)
initiative ties), the dragon takes a lair action to cause one of the following effects:
A strong wind blows around the dragon. Each creature within 60 feet of the dragon must succeed on a DC 15
image from a distance can tell it’s an illusion with a successful DC 20 Intelligence (Investigation) check. Any physical interaction with an image reveals it to be an illusion, because objects pass
Helm of Brilliance
Legacy
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Magic Items
Basic Rules (2014)
at least one ruby, you have resistance to fire damage.
As long as the helm has at least one fire opal, you can use an action and speak a command word to cause one weapon you are holding to burst into
you must succeed on a DC 17 Dexterity saving throw or be struck by a beam, taking radiant damage equal to the number of gems in the helm. The helm and its gems are then destroyed.
Monsters
Mordenkainen Presents: Monsters of the Multiverse
, Titivilus has manipulated everyone along his path to power, either to win them over to his cause or to remove them as a threat.
Since gaining his position, Titivilus has convinced Dispater that countless
acceptance of his plans and his advice can last only so long before some other plotter steps in and reveals the truth. For insurance, Titivilus has begun recruiting outsiders to deal with problem
Zariel
Legacy
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Monsters
Mordenkainen’s Tome of Foes
), detect evil and good, fireball, invisibility (self only), wall of fire
3/day each: blade barrier, dispel evil and good, finger of death
Legendary Resistance (3/Day). If Zariel fails a saving throw
of all kinds crawl over the structure, ensuring that no intruders breach their defenses.
Lair Actions. On initiative count 20 (losing initiative ties), Zariel can take a lair action to cause one of
Deck of Many Things
Legacy
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Magic Items
Basic Rules (2014)
, discard this card, and draw from the deck again, counting both draws as one of your declared draws. If losing that much XP would cause you to lose a level, you instead lose an amount that leaves you
ability to cast the wish spell 1d3 times.
Rogue. A nonplayer character of the GM's choice becomes hostile toward you. The identity of your new enemy isn't known until the NPC or someone else reveals
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
soul of the mighty warlord Leuk-o was drawn into the artifact and has become its animating force. The servant has been known to attack or move of its own accord, particularly if doing so will cause
Magic Items
Waterdeep: Dragon Heist
defense against the axe, which passes through that spell’s barrier of magical force.
When you hit a fiend or an undead with the axe, cold blue flames erupt from its blade and deal an extra 2d6
regains all expended charges daily at dawn.
Illumination. While holding the axe, you can use an action to cause the axe to glow blue or to quench the glow. This glow sheds bright light in a 30-foot
Compendium
- Sources->Dungeons & Dragons->Dungeon Master’s Guide
command word or until you use another function of the gem.
Second Command Word. You expend 1 charge and cause the gem to fire a brilliant beam of light at one creature you can see within 60 feet of
itself on a success.
Third Command 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
Compendium
- Sources->Dungeons & Dragons->D&D Beyond Basic Rules
command word or until you use another function of the gem.
Second Command Word. You expend 1 charge and cause the gem to fire a brilliant beam of light at one creature you can see within 60 feet of
itself on a success.
Third Command 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
Monsters
The Book of Many Things
2/day: Mass Cure Wounds (cast at 8th level)
1/day each: Blade Barrier, Divination, Greater RestorationThe medusa can take 3 legendary actions, choosing from the options below. It can take only one
with advantage.Sometimes deeply devout people, usually either Humanoids or medusas, dedicate themselves to a cause and are transformed by a deity or magic into hierophant medusas—beings with
Compendium
- Sources->Dungeons & Dragons->Divine Contention
party to the Ethereal Plane. Before beginning his ritual, Gallio shows the characters the monsters held in his dimensional cells. He reveals that the planar beacon freezes any extraplanar beings caught
in its beam: to bring the monsters home, the characters must grab hold of them, then return to this world and imprison the monster inside one of his dimensional cells.
Compendium
- Sources->Dungeons & Dragons->Basic Rules (2014)
Gem of Brightness Wondrous item, uncommon This prism has 50 charges. While you are holding it, you can use an action to speak one of three command words to cause one of the following effects: The
the command word or until you use another function of the gem. The second command word expends 1 charge and causes the gem to fire a brilliant beam of light at one creature you can see within 60 feet of
Compendium
- Sources->Dungeons & Dragons->Dungeon Master’s Guide (2014)
Gem of Brightness Wondrous item, uncommon This prism has 50 charges. While you are holding it, you can use an action to speak one of three command words to cause one of the following effects: Gem of
action to repeat the command word or until you use another function of the gem. The second command word expends 1 charge and causes the gem to fire a brilliant beam of light at one creature you can
Compendium
- Sources->Dungeons & Dragons->Basic Rules (2014)
minute 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 damage
Compendium
- Sources->Dungeons & Dragons->Player's Handbook (2014)
minute 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 damage
Monsters
Fizban's Treasury of Dragons
Psychic Step or Spellcasting.
Starlight Strike (Costs 3 Actions). The dragon releases a searing beam of starlight at a creature that it can see within 60 feet of it. The target must succeed on a DC 17
antics sometimes cause avalanches that threaten nearby villages.
5
An adult crystal dragon enjoys shaping the ice and snow near a den of troll;trolls into a labyrinth and watching the trolls try to
Compendium
- Sources->Dungeons & Dragons->Dragon of Icespire Peak
Strength (Athletics) check. Characters can reach the belfry from inside using magic such as a spider climb or fly spell. Treasure. Close examination of the bell reveals that it’s thin sides are solid
can use them to detach the bell from the beam in 1 minute. Any creature under the bell when it falls must succeed on a DC 12 Dexterity saving throw to get out of the way, or take 14 (4d6) bludgeoning damage. The gold bell is worth 2,500 gp.
Compendium
- Sources->Dungeons & Dragons->Vecna: Eve of Ruin
other means of seeing in the dark. Moonlight Mirrors Several areas in the vault contain objects known as moonlight mirrors, which each reflect a powerful beam of light from one of Krynn’s moons
damage. A Detect Magic spell reveals an aura of evocation magic emanating from the mirror. Unless covered, the reflective side of a moonlight mirror casts bright light in a 20-foot hemisphere, in the
Compendium
- Sources->Dungeons & Dragons->Spelljammer: Adventures in Space->Astral Adventurer’s Guide
deck is used to load the cannon balls on board. A bombard can float and sail on water, but it can’t land safely on the ground (its keel would cause it to roll on its side). Bombard Summary Armor Class
: 15 (wood) Cargo: 150 tons Hit Points: 300 Crew: 12 Damage Threshold: 20 Keel/Beam: 140 ft./30 ft. Speed: fly 35 ft. (4 mph) Cost: 50,000 gp Bombard Deck PlansView Unlabeled Version 2 Ballistae
Compendium
- Sources->Dungeons & Dragons->Spelljammer: Adventures in Space->Astral Adventurer’s Guide
water, but it isn’t built to land on the ground (the ventral fins would snap under the weight of the ship during landing, and the keel would cause the ship to roll to one side). Typical weapons on a
flying fish ship include a forward-mounted mangonel and an aft-mounted ballista. Flying Fish Ship Summary Armor Class: 15 (wood) Cargo: 13 tons Hit Points: 250 Crew: 10 Damage Threshold: 15 Keel/Beam: 120
Compendium
- Sources->Dungeons & Dragons->Spelljammer: Adventures in Space->Astral Adventurer’s Guide
ground (its keel would cause it to roll on its side). The ship’s standard weaponry includes two forward-mounted ballistae and an aft-mounted mangonel. Space Galleon Summary Armor Class: 15 (wood
) Cargo: 20 tons Hit Points: 400 Crew: 20 Damage Threshold: 15 Keel/Beam: 130 ft./30 ft. Speed: fly 35 ft. (4 mph) Cost: 30,000 gp 2 Ballistae (Crew: 3 Each) Armor Class: 15
Hit Points: 50
Cost: 50
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
to stone and placed here by Halaster to lure other adventurers to their doom (see “Pit Trap” below). Pit Trap A detect magic spell reveals an aura of transmutation magic around the pit. Each time
Dexterity saving throw, taking 88 (16d10) bludgeoning damage on a failed save, or half as much damage on a successful one. Creatures that are gaseous, amorphous (such as an ooze), or protected by an impenetrable magical barrier (such as that created by an Otiluke’s resilient sphere spell) take no damage.
Compendium
- Sources->Dungeons & Dragons->Tyranny of Dragons
quick to point out this anomaly, to prove to the characters that the maze is nothing to take lightly. The view from above reveals the maze as it exists in the real world. The view up the path from
ground level looks into the extradimensional space that Xonthal crafted as a barrier around his home. The tower’s entrance exists only within this extradimensional space. Entering the maze any other way
Compendium
- Sources->Dungeons & Dragons->Tomb of Annihilation Supplement
successful DC 10 Wisdom (Insight) check reveals that the mud mephit seems to be waiting for something to happen. Florrb doesn’t want others to know what’s really going on and reveals the cause of its anxiety only if magically compelled to do so.
circular. (The pools shown on map 1 are not to scale.) A detect magic spell reveals a faint aura of abjuration magic around each pool. The tortles of the island like to bathe and relax in the mud pools
Compendium
- Sources->Dungeons & Dragons->Rise of Tiamat
are quick to point out this anomaly, to prove to the characters that the maze is nothing to take lightly. The view from above reveals the maze as it exists in the real world. The view up the path from
ground level looks into the extradimensional space that Xonthal crafted as a barrier around his home. The tower’s entrance exists only within this extradimensional space. Entering the maze any other






