below barriers diffusing cube reverts

Doppelganger Legacy

Monsters Basic Rules (2014)

. Any equipment it is wearing or carrying isn't transformed. It reverts to its true form if it dies. Ambusher. The doppelganger has advantage on attack rolls against any creature it has surprised

magically reads the surface thoughts of one creature within 60 feet of it. The effect can penetrate barriers, but 3 feet of wood or dirt, 2 feet of stone, 2 inches of metal, or a thin sheet of lead

Mummy Lord Legacy

Monsters Basic Rules (2014)

, including ones behind barriers and around corners, can't regain hit points until the end of the mummy lord's next turn. Whirlwind of Sand (Costs 2 Actions). The mummy lord magically transforms into a

whirlwind of sand, moves up to 60 feet, and reverts to its normal form. While in whirlwind form, the mummy lord is immune to all damage, and it can't be grappled, petrified, knocked prone, restrained, or

Diderius

Monsters Tyranny of Dragons

(Costs 2 Actions). Diderius magically unleashes negative energy. Creatures within 60 feet of him, including ones behind barriers and around corners, can’t regain hit points until the end of his next

turn. Whirlwind of Sand (Costs 2 Actions). Diderius magically transforms into a whirlwind of sand, moves up to 60 feet, and reverts to his normal form. While in whirlwind form, Diderius is immune to

Fungal Servant

Monsters Candlekeep Mysteries

2 Actions). The fungal servant magically unleashes negative energy. Creatures within 60 feet of the fungal servant, including ones behind barriers and around corners, can’t regain hit points

until the end of the fungal servant’s next turn. Whirlwind of Spores (Costs 2 Actions). The fungal servant magically transforms into a whirlwind of spores, moves up to 60 feet, and reverts to its

Valin Sarnaster

Monsters Candlekeep Mysteries

energy. Creatures within 60 feet of Valin, including ones behind barriers and around corners, can’t regain hit points until the end of Valin’s next turn. Whirlwind of Sand (Costs 2 Actions

). Valin magically transforms into a whirlwind of sand, moves up to 60 feet, and reverts to her normal form. While in whirlwind form, Valin is immune to all damage, and she can’t be grappled

Gorka Tharn

Monsters Waterdeep: Dungeon of the Mad Mage

Negative Energy (Costs 2 Actions). The mummy lord magically unleashes negative energy. Creatures within 60 feet of the mummy lord, including ones behind barriers and around corners, can't regain hit

points until the end of the mummy lord's next turn. Whirlwind of Sand (Costs 2 Actions). The mummy lord magically transforms into a whirlwind of sand, moves up to 60 feet, and reverts to its normal

Spells

Compendium - Sources->Dungeons & Dragons->Planescape: Adventures in the Multiverse->Sigil and the Outlands

(a broken portal key, which the spell consumes) Duration: 24 hours You fortify the fabric of the planes in a 30-foot cube you can see within range. Within that area, portals close and can’t be opened

for the duration. Spells and other effects that allow planar travel or open portals, such as gate or plane shift, fail if used to enter or leave the area. The cube is stationary. At Higher Levels. When

Doppelganger

Compendium - Sources->Dungeons & Dragons->Lost Mine of Phandelver

slain, the doppelganger reverts to its natural form. Ambusher. The doppelganger has advantage on attack rolls against any creature it has surprised. Surprise Attack. If the doppelganger surprises a

of it. The effect can penetrate barriers, but 3 feet of wood or dirt, 2 feet of stone, 2 inches of metal, or a thin sheet of lead blocks it. While the target is within range, the doppelganger can

Doppelganger

Compendium - Sources->Dungeons & Dragons->Infernal Machine Rebuild

. It reverts to its true form if it dies. Ambusher. In the first round of a combat, the doppelganger has advantage on attack rolls against any creature it surprised. Surprise Attack. If the

creature within 60 feet of it. The effect can penetrate barriers, but 3 feet of wood or dirt, 2 feet of stone, 2 inches of metal, or a thin sheet of lead blocks it. While the target is in range, the

19. Obo'laka's Shrine

Compendium - Sources->Dungeons & Dragons->Tomb of Annihilation

puzzle cube trap before touching it, and its magic turned him to stone. If a greater restoration spell or similar magic is cast on Voj, he reverts to flesh, realizes he’s not alone, and attacks anyone

obtain Obo’laka’s puzzle cube. The doors are slightly ajar and have rusty hinges that squeal loudly when the doors are opened. When the characters arrive, four zorbos (see appendix D) are lurking around

Forest Crystal Magic

Compendium - Sources->Dungeons & Dragons->Bigby Presents: Glory of the Giants

targeting an area of the forest ends the effect in a 20-foot cube for 1 hour if the caster succeeds on a DC 20 ability check using the caster’s spellcasting ability. The affected area reverts to a fetid

18. Nangnang's Shrine

Compendium - Sources->Dungeons & Dragons->Tomb of Annihilation

, the illusion drops and the treasure reverts to its true form: gold coins become disks of tin, silver decanters revert back to clay jugs, and glittering armor becomes rusty scrap metal. A detect magic

treasures found in the shrine. However, if another creature in the shrine is also carrying such treasure, the doors remains closed. A knock spell also opens the doors. 18C. Puzzle Cube In the middle

House Freth

Compendium - Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage

crawler 2. Chimera 3. Fire elemental 4. Gelatinous cube 5. Gorgon 6. Hook horror 7. Manticore 8. Otyugh 9. Owlbear 10. Wyvern When the polymorphed creature drops to 0 hit points

, it reverts to its original form and is stable at 0 hit points. Once a glyph is triggered, it disappears, rendering its space safe to pass through until Arcturia sees fit to replace it. A successful dispel magic spell (DC 17) cast on a glyph removes it.

Doppelganger

Compendium - Sources->Dungeons & Dragons->Monster Manual (2014)

reverts to its true form if it dies. Ambusher. In the first round of a combat, the doppelganger has advantage on attack rolls against any creature it surprised. Surprise Attack. If the

within 60 feet of it. The effect can penetrate barriers, but 3 feet of wood or dirt, 2 feet of stone, 2 inches of metal, or a thin sheet of lead blocks it. While the target is in range, the

16. Central Cavern

Compendium - Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage

it outside the range of some creatures’ darkvision. The stone giants have never noticed it for this reason. The castle looks small enough to fit in a 20-foot-cube, and it floats at the center of an

. Characters who enter the sphere can tell something has happened when Maddgoth’s castle suddenly looms twelve times larger in their vision. A shrunken creature or object reverts to its normal size

Sorcerer Subclasses

Compendium - Sources->Dungeons & Dragons->Player’s Handbook

disorder around you. As a Magic action, you summon the spirits in a 30-foot Cube originating from you. The spirits look like modrons or other Constructs of your choice. The spirits are intangible and

invulnerable, and they create the effects below within the Cube before vanishing. Once you use this action, you can’t use it again until you finish a Long Rest unless you spend 7 Sorcery Points (no

Mummy Lord

Compendium - Sources->Dungeons & Dragons->Monster Manual (2014)

of the mummy lord, including ones behind barriers and around corners, can’t regain hit points until the end of the mummy lord’s next turn. Whirlwind of Sand (Costs 2 Actions). The mummy lord

magically transforms into a whirlwind of sand, moves up to 60 feet, and reverts to its normal form. While in whirlwind form, the mummy lord is immune to all damage, and it can’t be grappled, petrified

Specific Spells

Compendium - Sources->Dungeons & Dragons->Sage Advice & Errata

5-foot squares, does Cloud of Daggers affect a single square? Cloud of Daggers (5-foot Cube) can affect more than one square on a grid unless the DM says effects snap to the grid. There are many ways

to position that Cube. Can a creature under the effect of Compelled Duel teleport more than 30 feet away from the caster? No. You can’t move farther than 30 feet away from the caster of Compelled Duel

Magical Phenomena

Compendium - Sources->Dungeons & Dragons->Tasha’s Cauldron of Everything

surfaces in the environment and launch caustic spittle. The mimic colony chooses a cube of nonmagical, inanimate material in physical contact with it. The cube can be up to 15 feet on a side. The colony

. Any equipment it is wearing or carrying isn’t transformed. It reverts to its true form if it dies. Mimic Colony Primal Fruit In wild places brimming with nature’s power, gardens meticulously tended

Specific Spells

Compendium - Sources->Dungeons & Dragons->Sage Advice Compendium

the necrotic damage, whether because of immunity or some other reason. Using 5-foot squares, does cloud of daggers affect a single square? Cloud of daggers (5 ft. cube) can affect more than one square

on a grid, unless the DM says effects snap to the grid. There are many ways to position that cube. Can a creature under the effect of compelled duel teleport more than 30 feet away from the caster? No

Cottage Locations

Compendium - Sources->Dungeons & Dragons->The Wild Beyond the Witchlight

faulty well is a 10-foot-high gelatinous cylinder (use the gelatinous cube stat block) that’s blocking the normal flow of water. The creature’s presence has also contaminated the water above it

, ascertain that something akin to a gelatinous cube has lodged itself in the well. The gelatinous cylinder lurks 10 feet down inside the well and is invisible in the water. It attacks any creature and

Tomb Locations

Compendium - Sources->Dungeons & Dragons->Candlekeep Mysteries

smell dissipates as the water cools and reverts to holy water over the course of 1 hour. Divine Insight. Any character who has a background involving Savras, or who succeeds on a DC 20 Intelligence

thousands of motes of light that fill this cube-shaped room takes the form of a tiny eyeball, all of them shifting to stare at you as they drift past. Unusual Gravity. When any character enters this area

D&D Beyond

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