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Returning 35 results for 'before been device causing reduced'.
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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
for 1 hour. If the snake is reduced to 0 Hit Points, it dies and reverts to its staff form; the staff then shatters and is destroyed. If the snake reverts to staff form before losing all its Hit Points, it regains all of them.
Monsters
Monster Manual
Entangling Rope action. The rope has AC 20, HP 90, and Immunity to Poison and Psychic damage. The rope turns to dust if reduced to 0 Hit Points, if it is 5+ feet away from the erinyes for 1 hour or more
the target, or the erinyes uses Entangling Rope again.Parry. Trigger: The erinyes is hit by a melee attack roll while holding a weapon. Response: The erinyes adds 4 to its AC against that attack, possibly causing it to miss.Fire, PoisonCold
Monsters
Monster Manual
maximum decreases by 10 (3d6);{"diceNotation":"3d6", "rollType":"roll", "rollAction":"Rotting Fist"} every 24 hours that elapse. A creature dies and turns to dust if reduced to 0 Hit Points by this attack
Sand. Trigger: The mummy is hit by an attack roll. Response: The mummy adds 2 to its AC against the attack, possibly causing the attack to miss, and the mummy teleports up to 60 feet to an unoccupied
Magic Items
Bigby Presents: Glory of the Giants
. Additionally, you can cast the spare the dying cantrip using either an action or a bonus action.
Invoking the Rune. When a creature you can see within 60 feet of you is reduced to 0 hit points as a result of
taking damage, you can use your reaction to invoke the item’s rune, causing the pendant to flash with pale light. The creature then instead drops to 1 hit point.
Once the rune has been invoked, it can’t be invoked again until the next dawn.
Monsters
Tales from the Yawning Portal
half damage if it fails.
Displacement. The displacer beast projects a magical illusion that makes it appear to be standing near its actual location, causing attack rolls against it to have disadvantage
. If it is hit by an attack, this trait is disrupted until the end of its next turn. This trait is also disrupted while the displacer beast is incapacitated or has a speed of 0.
Reduced Threat. This
Monsters
Spelljammer: Adventures in Space
Malfunction. Whenever the autognome takes 15 damage or more from a single source and isn’t reduced to 0 hit points by that damage, roll a d20;{"diceNotation":"1d20","rollType":"roll
uses an action to reattach the arm.
15–16: “Who Turned Out the Lights?” The autognome’s head falls off and deactivates, causing the autognome to be blinded and deafened until
Monsters
Bigby Presents: Glory of the Giants
, it must succeed on a DC 20 Constitution saving throw, or its hit point maximum is reduced by an amount equal to the necrotic damage taken. This reduction lasts until the target finishes a long rest
. The target dies if its hit point maximum is reduced to 0.
A Humanoid slain by this attack immediately rises as a miniature spectral cloud (use the specter stat block in the Monster Manual). The
Monsters
The Book of Many Things
Constitution saving throw or its hit point maximum is reduced by an amount equal to the damage taken. This reduction lasts until the target finishes a long rest. The target dies if this effect reduces its hit
"} necrotic damage, and its Charisma score is reduced by 1d6;{"diceNotation":"1d6","rollType":"roll","rollAction":"Drink Breath"}. This reduction lasts until the target finishes a short or long rest. If this
Monsters
Van Richten’s Guide to Ravenloft
","rollDamageType":"piercing"} piercing damage at the start of each of its turns. Any creature can use an action to kill or remove the scarabs with fire or a weapon that deals piercing damage, causing 1 damage of
the appropriate type to the target. A creature reduced to 0 hit points by the swarm’s piercing damage dies.Base creatures are among the first to respond to sinister forces at work in a land. As
Equipment
Lord Syuul;Lord Syuul's psionic enucleator can be used to modify the body of any creature inside its tank. The device must be operated by another creature who can manifest a psionic power or who has
essential organ, granting them advantage on death saving throws.
Relentless Toughness. The creature is infused with troll essence. If they are reduced to 0 hit points by damage other than acid or fire
Monsters
The Wild Beyond the Witchlight
Boon of Immortality. Endelyn is immune to any effect that would age her, and she can’t die from old age.
Eclipsed Doom. Endelyn can be killed only if she is reduced to 0 hit points during a
deal.
Endelyn’s obsession with tragedy and hopelessness extends to her own life; she has foreseen her own demise during a solar eclipse. In the depths of her castle, a lightning-powered device
Monsters
Fizban's Treasury of Dragons
Death Throes. When the draconian is reduced to 0 hit points, its magical essence lashes out as a ball of lightning at the closest creature within 30 feet of it before arcing out to up to two other
AC against that attack and potentially causing the attack to miss.The rarest and most powerful of the draconians are the masterminds—spellcasters and strategists who most often serve as military
Magic Items
Strixhaven: A Curriculum of Chaos
or slap it awake.
Visions of Terror. The cursed creature sees terrifying visions, causing it to view all creatures that aren’t also cursed as dangerous monsters for 10 minutes. The cursed
, poison, and psychic damage; and resistance to all other types of damage. If reduced to 0 hit points, the orb shatters.
Demilich (Variant)
Legacy
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Monsters
Monster Manual (2014)
Actions). Each creature within 30 feet of the demilich must make a DC 16 Constitution saving throw. On a failed save, the creature’s hit point maximum is magically reduced by 10 (3d6);{"diceNotation
":"3d6","rollType":"roll","rollAction":"Energy Drain"}. If a creature’s hit point maximum is reduced to 0 by this effect, the creature dies. A creature’s hit point maximum can be restored
Monsters
Eberron: Rising from the Last War
much damage on a successful one. A creature reduced to 0 hit points by this beam is disintegrated, leaving behind anything it was wearing or carrying.In the final days of the Last War, House Cannith
Mourning. The arcane cataclysm that engulfed Cyre destroyed most of the warforged colossi, causing them to collapse into lifeless heaps.
Colossal Survivors. Some warforged colossi survived the Day of
Monsters
Monstrous Compendium Vol. 1: Spelljammer Creatures
causing harm to anyone or anything. A fractine that doesn’t consume light or magical energy for ten days begins to flicker. A day later, it folds in on itself and self-destructs, leaving no trace
, and the fractine can’t be harmed from within the demiplane.
The fractine can imprison only one creature at a time and can release that creature as a bonus action. If the fractine is reduced
Compendium
- Sources->Dungeons & Dragons->Baldur's Gate: Descent into Avernus
driver can activate this magical device as a bonus action, causing the vehicle to expel a 30-foot cube of opaque smoke directly in front of it or behind it. The cloud is stationary and lasts for 1
. This device needs 24 hours to recharge before it can be used again. Teleporter The vehicle’s driver can activate this magical device as a bonus action, causing the vehicle to teleport to an
Compendium
- Sources->Dungeons & Dragons->Spelljammer Academy
Ending the Encounter The encounter ends when one of the following conditions is met: The enemy ship is reduced to 100 hit points or fewer, causing it to retreat. The enemy ship takes two critical
hits, causing it to retreat. The characters’ ship moves more than 100 feet away from the enemy ship, at which point the enemy ship breaks off its pursuit and flees. The characters’ ship is reduced to 0 hit points. If this occurs, the characters fail the training exercise, and the simulation ends.
Compendium
- Sources->Dungeons & Dragons->Eberron: Rising from the Last War
attuned to. If you’re reduced to 0 hit points but not killed outright, you can use your reaction to end one of your artificer infusions, causing you to drop to 1 hit point instead of 0.
Compendium
- Sources->Dungeons & Dragons->Wayfinder's Guide to Eberron
attuned to. If you’re reduced to 0 hit points but not killed outright, you can use your reaction to end one of your artificer infusions, causing you to drop to 1 hit point instead of 0.
Compendium
- Sources->Dungeons & Dragons->Tasha’s Cauldron of Everything
item you are currently attuned to. If you’re reduced to 0 hit points but not killed outright, you can use your reaction to end one of your artificer infusions, causing you to drop to 1 hit point instead of 0.
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
reduced to 0, and it can’t teleport. It can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.
Psychic Inspiration. The elder brain targets one
Monsters
Curse of Strahd
","rollDamageType":"necrotic"} necrotic damage. The target’s hit point maximum is reduced by an amount equal to the necrotic damage taken, and Strahd regains hit points equal to that amount. The
reduction lasts until the target finishes a long rest. The target dies if its hit point maximum is reduced to 0. A humanoid slain in this way and then buried in the ground rises the following night as a
Compendium
- Sources->Dungeons & Dragons->Infernal Machine Rebuild
of the chasm, the base of the fallen tower can be seen, reduced to a broken section of its former ground floor.
Ruins This city once housed the Infernal Machine before Lum the Mad conquered those
follows the lines discovers that they converge at a huge central representation of a massive magical-mechanical device—the Infernal Machine.
Compendium
- Sources->Dungeons & Dragons->Bigby Presents: Glory of the Giants
143 (26d10) force damage. A creature reduced to 0 hit points is disintegrated into fine gray ash and can be returned to life only by a true resurrection or wish spell. A creature that activates this
controls can make a DC 20 Intelligence (Arcana) check. On a successful check, the creature can cast the scrying spell (spell save DC 17) from the device. A magical image of the target appears before the controls.
Compendium
- Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage
under stony cowls and their arms raised toward the iron disk.
This room is one large timekeeping device. Every day at dawn and at dusk, the wizard statues exert invisible magical force upon the
suspended iron disk, causing it to flip over within its circular frame like a coin. During the day, the sun symbol is visible on the disk’s underside; at night, the disk displays the moon symbol on its
Compendium
- Sources->Dungeons & Dragons->Strixhaven: A Curriculum of Chaos
Mysterious Magic Many of the strange events that occur in this chapter are a result of Murgaxor Grenshel manipulating Dean Tullus using a mysterious orb. This device, Murgaxor’s orb (see below
, causing it to view all creatures that aren’t also cursed as dangerous monsters for 10 minutes. The cursed creature must use its action each round to make one attack against the nearest non-cursed
Compendium
- Sources->Dungeons & Dragons->Legendary Magic Items
Horn of Beckoning Death Wondrous Item, Legendary (Requires Attunement by a Sorcerer, Warlock, or Wizard) Resembling a small dragon’s horn, this arcane device glows with a hellish internal light when
Plane. When you hit a creature with a melee attack using this magic dagger, the target takes an extra 3d12 necrotic damage.
A creature reduced to 0 hit points by this weapon dies and can’t be raised
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
, and you can’t use the staff’s property again for 1 hour. If the snake is reduced to 0 Hit Points, it dies and reverts to its staff form; the staff then shatters and is destroyed. If the snake reverts to staff form before losing all its Hit Points, it regains all of them.
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
, and you can’t use the staff’s property again for 1 hour. If the snake is reduced to 0 Hit Points, it dies and reverts to its staff form; the staff then shatters and is destroyed. If the snake reverts to staff form before losing all its Hit Points, it regains all of them.
Compendium
- Sources->Dungeons & Dragons->Ghosts of Saltmarsh
drowned ones in Tammeraut’s Fate), and victims most often acquire it through wounds caused by infected creatures.
The disease’s boils manifest in 1d4 hours, causing the victim’s Constitution and Charisma
, the victim takes 18 (4d8) necrotic damage as the boils burst and spread. A creature reduced to 0 hit points by this damage cannot regain hit points until the disease is cured, though it can be stabilized as normal.
Compendium
- Sources->Dungeons & Dragons->Icewind Dale: Rime of the Frostmaiden
first time a creature picks up the Summer Star, its core glows with a golden radiance as bright as a candle flame. Unless the creature drops the device immediately, the light suddenly blossoms, becoming
a 10-foot-radius sphere of incinerating golden radiance centered on the device. Each creature in the sphere must make a DC 17 Constitution saving throw, taking 90 (10d10 + 35) radiant damage on a
Compendium
- Sources->Dungeons & Dragons->Quests from the Infinite Staircase
-svirfneblin depart for the Underdark via the tunnel in area F10. The workshop machines soon begin to shake violently, causing the whole lair to tremble. One minute later, the steam cylinder in the
workshop explodes, causing area F8 to cave in and dealing 70 (20d6) bludgeoning damage to any creatures still in that room. Death from Above Olivier Bernard The pitiless red dragon Grisdelfawr delights in
Compendium
- Sources->Dungeons & Dragons->Icewind Dale: Rime of the Frostmaiden
radius. The characters can use this device to counteract Auril’s spell and free Icewind Dale from her Everlasting Rime. Chardalyn
More than a hundred years prior to this adventure, a wizard named Akar
that has become suffused with demonic magic can warp a creature’s mind, causing madness that usually fades away once the contact is broken.
Chardalyn is cold to the touch and readily accepts
Compendium
- Sources->Dungeons & Dragons->Keys from the Golden Vault
the furnace isn’t replenished every hour with at least 100 gp worth of treasure, the Engine Car sputters and the train comes to a halt, causing a guard patrol (see “Guard Patrols” earlier in the
adventure) to investigate. A creature that enters the furnace for the first time on a turn or starts its turn there takes 55 (10d10) fire damage. A creature reduced to 0 hit points by this damage dies and is






