both before danger causing reduced

Staff of the Python

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.

Erinyes

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

Mummy Lord

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

Giant Insect

Spells Player’s Handbook

its movement to avoid danger. Using a Higher-Level Spell Slot. Use the spell slot’s level for the spell’s level in the stat block. Giant Insect Large Beast, Unaligned AC 11 + the spell

ft. Hit: 1d10 + 3 plus the spell’s level Bludgeoning damage, and the target’s Speed is reduced to 0 until the start of the insect’s next turn. Bonus Actions Venomous Spew (Centipede

Eye and Hand of Vecna

Magic Items Dungeon Master’s Guide

Sleep 1 Slow 2 Teleport 3 Properties of the Eye and Hand. While attuned to both the hand and eye, you gain the following additional benefits: Danger Sense. You have Advantage

damage on a failed save or half as much damage on a successful one. A creature reduced to 0 Hit Points by this damage is transformed into green slime (see chapter 3) that covers the ground in its

Sanctum Amulet

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.

Reduced-threat Displacer Beast

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

Autognome

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

Spectral Cloud

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

Breath Drinker

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

Swarm of Scarabs

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

Traag Draconian

Monsters Monstrous Compendium Vol. 2: Dragonlance Creatures

, it subtracts up to 50 feet from the fall when calculating the fall’s damage. Death Throes. If the draconian is reduced to 0 hit points, its body erupts into sludge that fills a 10-foot-radius

engines of carnage. Few commanders have successfully used a traag draconian’s reckless violence to their advantage in battle; for most, a traag draconian is as much of a danger to its allies as it is

High Fae Kindguard

Monsters Monstrous Compendium Vol. 4: Eldraine Creatures

10 ft., one target. Hit: 20 (4d6 + 6);{"diceNotation":"4d6+6", "rollType":"damage", "rollAction":"Fae Claymore", "rollDamageType":"force"} force damage, and the target’s speed is reduced by 10

inhuman, high fae are the oldest creatures in Eldraine, embodying the natural splendor and danger of the untamed wilderness. High fae have no regard for mortal values of honor and law, but they nonetheless

High Fae Impostor

Monsters Monstrous Compendium Vol. 4: Eldraine Creatures

other means of deception at their disposal. High Fae Ageless and inhuman, high fae are the oldest creatures in Eldraine, embodying the natural splendor and danger of the wilderness. High fae have no

transformation ends if the high fae is reduced to 0 hit points, uses this bonus action again, or uses a bonus action to revert to its true form.

Draconian Mastermind

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

Murgaxor's Orb

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

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

Summon Shadowspawn

Spells Tasha’s Cauldron of Everything

commands (no action required by you). If you don’t issue any, it takes the Dodge action and uses its move to avoid danger. At Higher Levels. When you cast this spell using a spell slot of 4th

has its speed reduced by 20 feet until the start of that creature’s next turn. Actions Multiattack. The spirit makes a number of attacks equal to half this spell’s level (rounded down

Spirit of Death

Spells The Book of Many Things

You call forth a spirit that embodies death. The spirit manifests in an unoccupied space you can see within range and uses the reaper spirit stat block. The spirit disappears when it is reduced to 0

verbal commands (no action required by you). If you don’t issue the spirit any commands, it takes the Dodge action and uses its movement to avoid danger. Reaper Spirit Medium Undead, Neutral

The Gardener

Monsters Quests from the Infinite Staircase

condition (escape DC 17). The vine vanishes when the target is no longer grappled, or when the Gardener wills it to (no action required). A creature reduced to 0 hit points by the vine has the

carrying, to an unoccupied space they can see within 15 feet. A creature reduced to 0 hit points by the psychic damage has the unconscious condition and is stable instead of dying. Spell Refuge. When

Warforged Colossus

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

Fractine

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

Flying Legacy

Rules

Flying creatures enjoy many benefits of mobility, but they must also deal with the danger of falling. If a flying creature is knocked prone, has its speed reduced to 0, or is otherwise deprived of

Folk Hero - Baldur's Gate

Backgrounds Baldur’s Gate: Descent into Avernus

help by paying for improved roofs and lamps in your neighborhood, causing the entire community to celebrate your deed. 4 Fueled by alcohol, you faced down a carrion crawler that slunk out of the

, unless you have shown yourself to be a danger to them. They will shield you from the law or anyone else searching for you, though they will not risk their lives for you. BALDUR’S GATE FEATURE

Imix

Monsters Princes of the Apocalypse

of Imix, and disappear if Imix is reduced to 0 hit points.Imix can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end

die and ponds dry up; after 10 days, unprotected livestock dies, and wells and small rivers dry up; after 20 days, large lakes and rivers are reduced in depth by 20 feet and shrink accordingly

Ending the Encounter

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.

Hythonia

Monsters Mythic Odysseys of Theros

; Recharges after a Short or Long Rest). If Hythonia is reduced to 0 hit points, she doesn’t die or fall unconscious. Instead, she sheds her skin, regains 199 hit points, and moves up to her speed

this happens, Hythonia heals many of her wounds and slips away from danger, and then she can choose one of her mythic actions when she uses a legendary action. You might foreshadow Hythonia using her

Flying Movement

Compendium - Sources->Dungeons & Dragons->Basic Rules (2014)

Flying Movement Flying creatures enjoy many benefits of mobility, but they must also deal with the danger of falling. If a flying creature is knocked prone, has its speed reduced to 0, or is

Soul of Artifice

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.

Soul of Artifice

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.

Soul of Artifice

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.

Elder Brain

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

Quest: Chaos Unfurls

Compendium - Sources->Dungeons & Dragons->Heroes of the Borderlands

throw or take 1d4 Slashing damage. A character reduced to 0 Hit Points by a scroll has the Unconscious condition but is Stable. There are two scrolls for every player character in the party. As an

character bullies a scroll, causing it to flee into a case. Case Closed If the characters encase all the scrolls, Toryn pays them 20 GP as promised. If the scrolls knock out all the characters, Toryn

Strahd von Zarovich

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

Adult Crystal Dragon

Monsters Fizban's Treasury of Dragons

points, allowing the Crystal Dragon Wyrmling;wyrmlings to blend in to rocky terrain in the face of danger. As they age, their scales turn snow white, then slowly fade to transparency. The oldest

statistics (other than its size). This transformation ends if the dragon is reduced to 0 hit points or uses a bonus action to end it. Psychic Step. The dragon magically teleports to an unoccupied space it can see within 60 feet of it.

D&D Beyond

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