causes which reduced

Ashen Knight

Monsters Keys from the Golden Vault

Ashen Creature. When the knight drops to 0 hit points, it is reduced to a pile of ash, and any equipment it was wearing or carrying falls to the ground. Brave. The knight has advantage on saving

wielding a melee weapon.Knights are warriors who pledge service to rulers, religious orders, and noble causes. A knight’s alignment determines the extent to which a pledge is honored. Whether

Vampiric Mist

Monsters Mordenkainen Presents: Monsters of the Multiverse

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.In

, insatiable thirst for blood remains. Indistinguishable from fog aside from the charnel reek it exudes, a vampiric mist descends on a creature and causes the blood in the creature’s body to ooze

Kalain

Monsters Waterdeep: Dragon Heist

paintings and causes its subject to spring forth, becoming a creature of that kind provided its CR is 3 or lower. The creature appears in an unoccupied space within 5 feet of the painting, which becomes

blank. The creature is friendly toward Kalain and hostile toward all others. It rolls initiative to determine when it acts. It disappears after 1 minute, when it is reduced to 0 hit points, or when Kalain

Oinoloth

Monsters Mordenkainen Presents: Monsters of the Multiverse

its hit point maximum is reduced by 7 (2d6);{"diceNotation":"2d6", "rollType":"roll", "rollAction":"Corrupted Healing"}. This reduction can be removed only by a wish spell or by casting greater

restoration on the target three times within the same hour. The target dies if its hit point maximum is reduced to 0. Spellcasting. The oinoloth casts one of the following spells, requiring no material

Orcus

Monsters Mordenkainen Presents: Monsters of the Multiverse

’t take the same lair action two rounds in a row: Deadly Utterance. Orcus’s voice booms throughout the lair. His utterance causes one creature of his choice to be subjected to power word

kill. Orcus needn’t see the creature, but he must be aware that the individual is in the lair. Grasp of the Dead. Orcus causes skeletal arms to rise from an area on the ground in a 20-foot square

Returned Drifter

Monsters Mythic Odysseys of Theros

), the Returned lose their identities, which manifest as separate beings known as eidolons. The experience of escaping the Underworld also causes them to lose their faces, which become expressionless

long-term memories, they generally can’t build meaningful relationships or establish new lives. Instead, most experience fleeting emotions and follow hollow routines, their existences reduced to

Returned Sentry

Monsters Mythic Odysseys of Theros

, which manifest as separate beings known as eidolons. The experience of escaping the Underworld also causes them to lose their faces, which become expressionless surfaces with empty eye sockets and gaping

’t build meaningful relationships or establish new lives. Instead, most experience fleeting emotions and follow hollow routines, their existences reduced to shadow plays without weight or substance

Geryon (Variant)

Monsters Mordenkainen Presents: Monsters of the Multiverse

long rest. The target’s hit point maximum is reduced by an amount equal to half the poison damage taken. This reduction lasts until the poisoned condition is removed. The target dies if its hit

point maximum is reduced to 0. Spellcasting. Geryon casts one of the following spells, requiring no material components and using Charisma as the spellcasting ability (spell save DC 21): At will

Archon of Falling Stars

Monsters Mythic Odysseys of Theros

. While mounted and not incapacitated, the archon can’t be surprised, and both it and its mount have advantage on Dexterity saving throws. If the archon is reduced to 0 hit points while riding its

mount, the mount is reduced to 0 hit points as well. Radiant Rebirth (Recharges after a Long Rest). If the archon is reduced to 0 hit points, it regains 30 hit points and springs back to its feet

Geryon

Monsters Mordenkainen Presents: Monsters of the Multiverse

long rest. The target’s hit point maximum is reduced by an amount equal to half the poison damage taken. This reduction lasts until the poisoned condition is removed. The target dies if its hit

point maximum is reduced to 0. Spellcasting. Geryon casts one of the following spells, requiring no material components and using Charisma as the spellcasting ability (spell save DC 21): At will

Banderhobb

Monsters Mordenkainen Presents: Monsters of the Multiverse

"} necrotic damage at the start of each of the banderhobb’s turns. A creature reduced to 0 hit points in this way stops taking the necrotic damage and becomes stable. The banderhobb can have

brief existence, a banderhobb attempts to carry out its creator’s bidding. It accomplishes its mission with no concern for the harm it suffers or causes. Its only desire is to serve and succeed. A

Returned Kakomantis

Monsters Mythic Odysseys of Theros

, which manifest as separate beings known as eidolons. The experience of escaping the Underworld also causes them to lose their faces, which become expressionless surfaces with empty eye sockets and gaping

’t build meaningful relationships or establish new lives. Instead, most experience fleeting emotions and follow hollow routines, their existences reduced to shadow plays without weight or substance

Returned Palamnite

Monsters Mythic Odysseys of Theros

known as eidolons. The experience of escaping the Underworld also causes them to lose their faces, which become expressionless surfaces with empty eye sockets and gaping mouths. These blank surfaces

relationships or establish new lives. Instead, most experience fleeting emotions and follow hollow routines, their existences reduced to shadow plays without weight or substance. Returned Masks. Adventurers

Duergar Mind Master

Monsters Mordenkainen Presents: Monsters of the Multiverse

. The duergar targets one creature it can see within 60 feet of it. The target must succeed on a DC 12 Intelligence saving throw, or the duergar causes it to use its reaction, if available, either to

carrying. While reduced, the duergar is Tiny, reduces its weapon damage to 1, and makes attack rolls, ability checks, and saving throws with disadvantage if they use Strength. It gains a +5 bonus to all

Fire Giant Forgecaller

Monsters Bigby Presents: Glory of the Giants

necrotic, poison, and psychic damage. The object regains all its hit points at the end of every turn, but it turns to dust if reduced to 0 hit points or when the giant dies. If the rune is destroyed

their legs and body.FireFurnace Armor (Requires Fire Rune). The giant causes smoke and cinders to billow from its armor, filling a 30-foot-radius sphere centered on the giant. While the armor is

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

up to her speed without provoking opportunity attacks. Snaky Hair. Hythonia makes one attack with her snaky hair. Petrified Earth (Costs 2 Actions). Hythonia causes stone spikes to erupt from the

Zuggtmoy

Monsters Mordenkainen Presents: Monsters of the Multiverse

and make one weapon attack. Summon Fungi. Zuggtmoy causes four gas spore;gas spores or violet fungus;violet fungi (both appear in the Monster Manual) to appear in unoccupied spaces that she chooses

, if it is reduced to 0 hit points, each creature within 10 feet of it takes poison damage equal to its number of Hit Dice. Poison; Bludgeoning, Piercing, and Slashing that is NonmagicalCold, Fire

Scion of Stronmaus

Monsters Bigby Presents: Glory of the Giants

caused by the scion’s restless sleep has little effect on the world. If it drifts too near the ground or the ocean surface, it causes mighty storms or fierce maelstroms. A scion’s slumber

an action to break away the ice. A creature hindered by ice has its speed reduced to 0. Lightning Bolts. Bolts of lightning strike down. Each creature in the cylinder must succeed on DC 25 Dexterity

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

to 120 feet to an unoccupied space he can see. Anything Imix is wearing or carrying isn’t teleported with him. Combustion (Costs 3 Actions). Imix causes one creature he can see within 30 feet of

Arasta

Monsters Mythic Odysseys of Theros

Armor of Spiders (Mythic Trait; Recharges after a Short or Long Rest). If Arasta is reduced to 0 hit points, she doesn’t die or fall unconscious. Instead, she regains 200 hit points. In

attack with her claws. Swarm (Costs 2 Actions). Arasta causes two Swarm of Insects (Spiders) ;swarms of spiders (see the Monster Manual) to appear in unoccupied spaces within 5 feet of her. Toxic Web

Demonomicon of Iggwilv Legacy

Magic Items Tasha’s Cauldron of Everything

do so, you can add double your proficiency bonus to the check. Fiendish Scourging. Your magic causes pain to fiends. While carrying the book, when you make a damage roll for a spell you cast against

within the book. At the heart of this deadly, semi-sentient domain lies a long-lost artifact, Fraz-Urb’luu’s Staff. If the staff is dragged from the pocket plane, the tome is reduced to a

Iggwilv's Cauldron

Magic Items The Wild Beyond the Witchlight

be aged to the point of decrepitude. In this state, the creature’s speed is halved, the range of its vision and hearing is reduced to 30 feet, and it has disadvantage on all ability checks

shatters the cauldron into eight pieces of roughly equal size, whereupon all ongoing effects created by the cauldron end as it loses its magic. The destruction of Iggwilv’s Cauldron causes all hags

Adult Deep Dragon

Monsters Fizban's Treasury of Dragons

. The dragon magically transforms into any creature that is Medium or Small, while retaining its game statistics (other than its size). This transformation ends if the dragon is reduced to 0 hit points

-and-gray hide is smooth like a salamander’s, and their eyes are pale. As they age, their spore breath causes fungi to bloom across their skin, especially around the head and neck. Their wings are

Ancient Deep Dragon

Monsters Fizban's Treasury of Dragons

. Change Shape. The dragon magically transforms into any creature that is Medium or Small, while retaining its game statistics (other than its size). This transformation ends if the dragon is reduced to 0

-gray hide is smooth like a salamander’s, and their eyes are pale. As they age, their spore breath causes fungi to bloom across their skin, especially around the head and neck. Their wings are

Dark Sacrament

spells

spell. On a hit, roll the Hit Point Dice expended to cast the spell plus 4d8. You deal Necrotic damage equal to the roll’s total. If this damage causes the creature to be reduced to 0 Hit Points

;{"diceNotation":"1d4", "rollType":"damage", "rollAction":"Unbreakable"} damage. Unerring. Your Proficiency Bonus increases by 2. Your dark blessing ends after 10 minutes or when you are reduced to 0

Duergar Mind Master Legacy

Monsters Mordenkainen’s Tome of Foes

, or 1 piercing damage and 14 (4d6);{"diceNotation":"4d6","rollType":"damage","rollAction":"Mind","rollDamageType":"psychic"} psychic damage while reduced. Invisibility (Recharge 4–6);{"diceNotation

succeed on a DC 12 Intelligence saving throw, or the duergar causes it to use its reaction either to make one weapon attack against another creature the duergar can see or to move up to 10 feet in a

Orthon Legacy

Monsters Mordenkainen’s Tome of Foes

is on a different plane, the orthon knows which one, but not the exact location there.Explosive Retribution. When it is reduced to 15 hit points or fewer, the orthon causes itself to explode. All other

Geryon (Summoner Variant) Legacy

Monsters Mordenkainen’s Tome of Foes

become poisoned until it finishes a short or long rest. The target's hit point maximum is reduced by an amount equal to half the poison damage it takes. If its hit point maximum drops to 0, it dies

see. Sound the Horn (1/Day). As an action Geryon blows his horn, which causes 5d4;{"diceNotation":"5d4","rollType":"roll","rollAction":"Sound the Horn"} minotaur;minotaurs to appear in unoccupied spaces

Geryon Legacy

Monsters Mordenkainen’s Tome of Foes

become poisoned until it finishes a short or long rest. The target's hit point maximum is reduced by an amount equal to half the poison damage it takes. If its hit point maximum drops to 0, it dies

initiative count 20 (losing initiative ties), Geryon can take a lair action to cause one of the following effects; he can't use the same effect two rounds in a row: Geryon causes a blast of cold to burst

Saving Throws Legacy

Rules

bonus to saving throws made using a particular ability score. Some monsters have saving throw proficiencies as well. The Difficulty Class for a saving throw is determined by the effect that causes it

detailed in the effect that allows the save. Usually, a successful save means that a creature suffers no harm, or reduced harm, from an effect.

Fall of Grimskalle

Compendium - Sources->Dungeons & Dragons->Icewind Dale: Rime of the Frostmaiden

Fall of Grimskalle When her final form is reduced to 0 hit points, Auril emits a death-howl that causes the two uppermost floors of Grimskalle (the battlement level and the palace level, as shown on

Fall of Grimskalle

Compendium - Sources->Dungeons & Dragons->Icewind Dale: Rime of the Frostmaiden

Fall of Grimskalle When her final form is reduced to 0 hit points, Auril emits a death-howl that causes the two uppermost floors of Grimskalle (the battlement level and the palace level, as shown on

Exhaustion

Compendium - Sources->Dungeons & Dragons->Player's Handbook (2014)

halved 3 Disadvantage on attack rolls and saving throws 4 Hit point maximum halved 5 Speed reduced to 0 6 Death If an already exhausted creature suffers another effect that causes exhaustion, its

exhaustion effects ending if a creature's exhaustion level is reduced below 1. Finishing a long rest reduces a creature's exhaustion level by 1, provided that the creature has also ingested some food and drink. Also, being raised from the dead reduces a creature’s exhaustion level by 1.

Exhaustion

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

halved 3 Disadvantage on attack rolls and saving throws 4 Hit point maximum halved 5 Speed reduced to 0 6 Death If an already exhausted creature suffers another effect that causes exhaustion, its

exhaustion effects ending if a creature's exhaustion level is reduced below 1. Finishing a long rest reduces a creature's exhaustion level by 1, provided that the creature has also ingested some food and drink. Also, being raised from the dead reduces a creature’s exhaustion level by 1.

Exhaustion

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

halved 3 Disadvantage on attack rolls and saving throws 4 Hit point maximum halved 5 Speed reduced to 0 6 Death If an already exhausted creature suffers another effect that causes exhaustion, its

exhaustion effects ending if a creature's exhaustion level is reduced below 1. Finishing a long rest reduces a creature's exhaustion level by 1, provided that the creature has also ingested some food and drink. Also, being raised from the dead reduces a creature’s exhaustion level by 1.

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