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Returning 35 results for 'blocking before detected causing required'.
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Magic Items
Dungeon Master’s Guide
As a Magic action, you can throw this staff so that it lands in an unoccupied space within 10 feet of you, causing the staff to become a Giant Constrictor Snake in that space. The snake is under your
control and shares your Initiative count, taking its turn immediately after yours.
On your turn, you can mentally command the snake (no action required) if it is within 60 feet of you and you don
Magic Items
Dungeon Master’s Guide
effect at the start of your turn. The spell lasts for 1 minute (no Concentration required) or until Blackrazor decides to end it, which it can do at the end of any of your turns.
Sentience
Blackrazor. Blackrazor can be destroyed by crushing it in the great gears of Mechanus. Primus, the creator of the modrons, also knows a series of musical tones that Blackrazor can’t stand to hear, causing the sword to shatter.
Monsters
Mordenkainen's Fiendish Folio Volume 1
. Their song has a strange magical current to it, causing those who hear it to suffer a stomach-churning vertigo that makes it impossible to move at speed or climb cave walls. Spellcasters suffer as their
monsters fall upon them.
Strange Escort. Certain Underdark explorers—judged inventive by some and lunatics by others—have learned to travel among the dire corbies. After blocking their ears to
Monsters
Planescape: Adventures in the Multiverse
(no action required).Multiattack. The dabus makes two Flying Brick attacks.
Flying Brick. Ranged Spell Attack: +5;{"diceNotation":"1d20+5", "rollType":"spell", "rollAction":"Flying Brick"} to hit
but also to combat individuals who disrupt the city’s operations or violate the Lady’s edicts, hurling bricks at troublemakers and subduing them by causing the streets to sprout grasping
Monsters
Strixhaven: A Curriculum of Chaos
Translation (2/Day). When the professor is hit by an attack roll, it can increase its AC by 3 against that attack, potentially causing it to miss. The professor can then teleport, along with any equipment
professor magically alters its physical form until it uses this bonus action again, until it is incapacitated or dies, or until it dismisses the effect (no action required). Choose one of the following
magic-items
Forgotten Realms: Adventures in Faerûn
Study action while reading your thoughts makes a DC 13 Intelligence (Investigation) check. On a successful check, it becomes aware that the detected thoughts are preprogrammed.
Golden Harper Pin
. While wearing this pin, you can cast the Nondetection spell on yourself. The duration of this spell is permanent until you disable the effect (no action required), you remove the pin, or you are no longer attuned to the pin.
Monsters
Baldur’s Gate: Descent into Avernus
Limited Magic Immunity. Mahadi can’t be affected or detected by spells of 6th level or lower unless he wishes to be. He has advantage on saving throws against all other spells and magical
signed on entry clearly stipulates their soul is forfeit. They’re required to pay off their debt through service. All such individuals fall under the effect of a geas cast as a 9th-level spell, which
Monsters
Mordenkainen Presents: Monsters of the Multiverse
the heart, causing those nearby to feel the approach of death. If detected, gloom weavers use their shadow magic to reduce enemies to ghastly corpses.
Shadar-kai
In the gloom of the Shadowfell live
Monsters
Mordenkainen Presents: Monsters of the Multiverse
ulitharid is more than 5 miles away from the elder brain, it can end the psychic link at any time (no action required).Tentacles. Melee Weapon Attack: +9;{"diceNotation":"1d20+9", "rollType":"to hit
are then planted in the ulitharid’s corpse, causing it to dissolve into ichor. This psionically potent slime helps to fuel the transformation of the area into a brine pool for the embryonic elder brain.
Githzerai Anarch
Legacy
This doesn't reflect the latest rules and lore.
Learn More
Monsters
Mordenkainen’s Tome of Foes
anarch’s lair is warped by its presence, which creates one or more of the following effects:
In Limbo, the anarch can spend 10 minutes stabilizing a 5-mile area centered on it, causing the
Limbo and brought to the Material Plane for as long as the anarch remains within 1 mile of it (no action required).
If the anarch dies, these effects end after 1d6;{"diceNotation":"1d6","rollType
Monsters
Mordenkainen Presents: Monsters of the Multiverse
:
Form Substance. In Limbo, the anarch can spend 10 minutes stabilizing a 5-mile area centered on it, causing the unformed substance to take whatever inanimate form the anarch chooses. During that
anarch remains within 1 mile of it (no action required).
If the anarch dies, these effects end after 1d6;{"diceNotation":"1d6","rollType":"roll"} rounds. All formed substance becomes a chaotic churn
Elder Brain
Legacy
This doesn't reflect the latest rules and lore.
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Monsters
Volo's Guide to Monsters
mind once it is no longer incapacitated, and the elder brain can terminate the link at any time (no action required). The target can use an action on its turn to attempt to break the psychic link
":"psychic"} psychic damage.
Sever Psychic Link. The elder brain targets a creature within 120 feet of it with which it has a psychic link. The elder brain ends the link, causing the creature to have
Monsters
Mordenkainen Presents: Monsters of the Multiverse
Link. The elder brain targets one creature within 120 feet of it with which it has a psychic link. The elder brain ends the link, causing the creature to have disadvantage on all ability checks
at any time (no action required). The target can use an action on its turn to attempt to break the link, doing so with a successful DC 18 Charisma saving throw. On a successful save, the target takes
Spells
Xanathar's Guide to Everything
this effect, the weeds and vines feel soft and reshape themselves to serve as temporary seats or beds.
Grove Guardians. You can animate up to four trees in the area, causing them to uproot themselves
required by you) that you issue while in the area. If you don’t give them commands and no intruders are present, the grove guardians do nothing. The grove guardians can’t leave the warded
Compendium
- Sources->Dungeons & Dragons->Rise of Tiamat
without engaging in any combat or causing any alert to be sounded. He is otherwise encountered when he enters the fight against the characters. Treasure If the characters can collect all the furniture
stolen from. The trunk is protected by a poisoned needle trap, which can be detected with a successful DC 18 Intelligence (Investigation) check. If the trap is triggered, it makes an attack: +10 to hit
Compendium
- Sources->Dungeons & Dragons->Tyranny of Dragons
Dragon Mask. Because Rezmir is a half-dragon, it’s unlikely that her clothing or armor will fit anyone else. The wardrobe containing the cult regalia is trapped. The trap can be detected with a successful
wardrobe is opened without disarming the trap or if the Dexterity check fails, the trap goes off, causing vials of acid to explode. All creatures in the room must make a DC 15 Dexterity saving throw
Compendium
- Sources->Dungeons & Dragons->Hoard of the Dragon Queen
Dragon Mask. Because Rezmir is a half-dragon, it’s unlikely that her clothing or armor will fit anyone else. The wardrobe containing the cult regalia is trapped. The trap can be detected with a
the wardrobe is opened without disarming the trap or if the Dexterity check fails, the trap goes off, causing vials of acid to explode. All creatures in the room must make a DC 15 Dexterity saving
Compendium
- Sources->Dungeons & Dragons->D&D Beyond Basic Rules
Staff of the Python Staff, Uncommon (Requires Attunement) As a Magic action, you can throw this staff so that it lands in an unoccupied space within 10 feet of you, causing the staff to become a
action required) if it is within 60 feet of you and you don’t have the Incapacitated condition. You decide what action the snake takes and where it moves during its turn, or you can issue it a general
Compendium
- Sources->Dungeons & Dragons->Dungeon Master’s Guide
Staff of the Python Staff, Uncommon (Requires Attunement) As a Magic action, you can throw this staff so that it lands in an unoccupied space within 10 feet of you, causing the staff to become a
action required) if it is within 60 feet of you and you don’t have the Incapacitated condition. You decide what action the snake takes and where it moves during its turn, or you can issue it a general
Compendium
- Sources->Dungeons & Dragons->Tyranny of Dragons
the stronghold, he is found in this area only if the characters have managed to come this far without engaging in any combat or causing any alert to be sounded. He is otherwise encountered when he
should occur to the characters that these goods are the rightful property of the elves they were stolen from. The trunk is protected by a poisoned needle trap, which can be detected with a successful DC
Compendium
- Sources->Dungeons & Dragons->D&D Beyond Basic Rules
creature can examine the trapped area and make a DC 11 Wisdom (Perception) check, detecting the trip wire and the unstable section of ceiling on a successful check. Once detected, the trip wire can be
easily cut or avoided (no ability check required). At Higher Levels. You can scale the trap for higher levels by increasing the damage and the save DC, as shown in the following table. Levels
Compendium
- Sources->Dungeons & Dragons->Dungeon Master’s Guide
creature can examine the trapped area and make a DC 11 Wisdom (Perception) check, detecting the trip wire and the unstable section of ceiling on a successful check. Once detected, the trip wire can be
easily cut or avoided (no ability check required). At Higher Levels. You can scale the trap for higher levels by increasing the damage and the save DC, as shown in the following table. Levels
Monsters
Fizban's Treasury of Dragons
convinced to defend the school in a contest against a rival college.
7
An emerald dragon invisibly tails a party of adventurers, causing trouble for the heroes so the dragon can watch how they respond
disguised as a human merchant prince.
5
An adult emerald dragon shows an emerald dragon wyrmling how to safely observe Humanoids without being detected.
6
An adult emerald dragon keeps a
Compendium
- Sources->Dungeons & Dragons->Mordenkainen's Tome of Foes
weighs down the heart, causing those within its oppressive aura to feel the approach of death. This torment alone is enough to please its master, the Raven Queen, but should it be detected, a gloom
Compendium
- Sources->Dungeons & Dragons->Candlekeep Mysteries
mercenary band called Bregan D’aerthe, in the hope of obtaining discounted treatments. The impostor’s disguise is easily detected by anyone who has met the real Jarlaxle.
2 A veteran of the
Cormyr, seeking Sune’s advice on how best to impress their betrothed.
6 A dwarf noble from Citadel Adbar, a dwarven city-stronghold far to the north, recently suffered a magical malady causing
Compendium
- Sources->Dungeons & Dragons->Lost Mine of Phandelver
Wisdom (Perception) check to spot the hidden pit. If the trap isn’t detected, the lead character must succeed on a DC 10 Dexterity saving throw or fall in, taking 1d6 bludgeoning damage. The pit’s walls are not steep, so no ability check is required to scramble out.
Compendium
- Sources->Dungeons & Dragons->Locathah Rising
, blocking them in. If anyone is hesitant to enter, he’ll beckon for them to come forward, asking them to converse with him. In this regard, his demeanor is regal, but gracious and non-hostile. “Please. Come
suppresses this effect for 1 minute. To leave this chamber, the characters will have to cut their way out or move through the coral blocking the entrance. The coral covering the entrance has has AC 15, 40
Compendium
- Sources->Dungeons & Dragons->Mordenkainen's Fiendish Folio Volume 1
into view. As these creatures travel, they hoot, chirp, and howl in maddening cacophony. Their song has a strange magical current to it, causing those who hear it to suffer a stomach-churning vertigo
learned to travel among the dire corbies. After blocking their ears to avoid the effect of a flock’s song, these travelers attempt to mimic the strange hooting and chirping of a dire corby, with
Compendium
- Sources->Dungeons & Dragons->Planescape: Adventures in the Multiverse->Morte’s Planar Parade
edicts, hurling bricks at troublemakers and subduing them by causing the streets to sprout grasping cobblestone hands. When dabus communicate, rather than speaking or signing words, they create esoteric
message can decipher it with a successful DC 10 Intelligence (Investigation) check (no action required).
Actions
Multiattack. The dabus makes two Flying Brick attacks.
Flying Brick. Ranged Spell
Compendium
- Sources->Dungeons & Dragons->Keys from the Golden Vault
permitted to explore the rest of the train. If one or more characters refuse to get their tickets punched, the duodrone whistles (no action required), causing four tridrones to emerge from hidden compartments
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
fighting a bulette in a gem-encrusted cavern.
Any character who has the Stonecunning trait notices the breakaway section of floor immediately (no check required). Others who search the floor for traps
. When a weight of 50 pounds or more is placed on the cover of the pit trap, it swings open like a trapdoor, causing any creature standing on it to fall in. The creature takes 10 (3d6) bludgeoning damage
Compendium
- Sources->Dungeons & Dragons->Mordenkainen's Tome of Foes
, perceived through magical scrying sensors, or detected by abilities that sense demons or fiends.
Actions
Multiattack. Fraz-Urb’luu makes three attacks: one with his bite and two with his fists.
Bite
or smaller creature, it is also grappled (escape DC 24). The grappled target is also restrained. Fraz-Urb’luu can grapple only one creature with his tail at a time.
Phantasmal Killer (Costs 2 Actions). Fraz-Urb’luu casts phantasmal killer, no concentration required.
Compendium
- Sources->Dungeons & Dragons->Curse of Strahd
dismiss the horses with a second command word (“Arvesh”). The horses can be dispelled (DC 15) but not harmed. The wagon has a hidden trapdoor in its underbelly that can be detected by a character who
flinders by the explosion, and the contents of the wagon (see “Treasure” below) are destroyed as well. A character inside the wagon spots the trap automatically (no ability check required) and can disable
Compendium
- Sources->Dungeons & Dragons->Out of the Abyss
scrying sensors, or detected by abilities that sense demons or fiends.
Actions
Multiattack. Fraz-Urb’luu makes three attacks: one with his bite and two with his fists.
Bite. Melee Weapon Attack: +16
is also grappled (escape DC 24). The grappled target is also restrained. Fraz-Urb’luu can grapple only one creature with his tail at a time.
Phantasmal Killer (Costs 2 Actions). Fraz-Urb’luu casts phantasmal killer, no concentration required.
Compendium
- Sources->Dungeons & Dragons->Princes of the Apocalypse
jumble does collapse. Then, a 10-foot section of the tunnel is buried in the heap, blocking passage. Removing the debris takes a few hours of work. Moving Stones. This area was a large storage cellar and
chamber floor to levitate stone in contact with it, so the floor’s magic can be detected with detect magic (transmutation school). A moderate impact on the floor, such as a dropped object weighing at