become barred diffusing cold reduced

Ray of Frost

Spells Player’s Handbook

A frigid beam of blue-white light streaks toward a creature within range. Make a ranged spell attack against the target. On a hit, it takes 1d8 Cold damage, and its Speed is reduced by 10 feet until

Robe of Useful Items

Magic Items Dungeon Master’s Guide

This robe has cloth patches of various shapes and colors covering it. While wearing the robe, you can take a Magic action to detach one of the patches, causing it to become the object or creature it

100 GP 09–15 Silver coffer (1 foot long, 6 inches wide and deep) worth 500 GP 16–22 Iron door (up to 10 feet wide and 10 feet high, barred on one side of your choice), which

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.

Elemental Cataclysm

Monsters Monster Manual

a type chosen by the cataclysm: Acid;{"diceNotation":"5d6+8", "rollType":"damage", "rollAction":"Elemental Burst (Acid)", "rollDamageType":"Acid"}, Cold;{"diceNotation":"5d6+8", "rollType":"damage

", "rollAction":"Elemental Burst (Cold)", "rollDamageType":"Cold"}, Fire;{"diceNotation":"5d6+8", "rollType":"damage", "rollAction":"Elemental Burst (Fire)", "rollDamageType":"Fire"}, Lightning

Night Hag

Monsters Monster Manual

use its Nightmare Haunting action. The bag has AC 15, HP 20, and Resistance to all damage. The bag turns to dust if reduced to 0 Hit Points. If the bag is destroyed, any souls the bag is holding are

DC 14): At Will: Detect Magic, Etherealness, Magic Missile (level 4 version) 2/Day Each: Phantasmal Killer, Plane Shift (self only)Cold, FireShape-Shift. The hag shape-shifting;shape-shifts into a

Book of Exalted Deeds

Magic Items Dungeon Master’s Guide

that tries to read from the book takes 24d6 Radiant damage. This damage ignores Resistance and Immunity, and it can’t be reduced or avoided by any means. A creature reduced to 0 Hit Points by

benefits granted by the book. Celestial Calm. While attuned to the book, you have Immunity to the Charmed and Frightened conditions and Resistance to Psychic damage. These benefits become permanent

Eye and Hand of Vecna

Magic Items Dungeon Master’s Guide

your body, devours it, and then takes control of the body like a puppet. If that happens, you become an NPC under the DM’s control. Eye of Vecna Spells Spell Charge Cost

with a weapon held by it deals an extra 2d8 Cold damage on a hit. Spellcasting. The hand has 8 charges and regains 1d4 + 4 expended charges daily at dawn. You can cast a spell on the Hand of Vecna

Vampire

Monsters Monster Manual

, the vampire uses Shape-Shift to become mist (no action required). If it can’t use Shape-Shift, it is destroyed. While it has 0 Hit Points in mist form, it can’t return to its vampire form

equal to that amount. A Humanoid reduced to 0 Hit Points by this damage and then buried rises the following sunset as a Vampire Spawn under the vampire’s control.Legendary Action Uses: 3 (4 in Lair

Demonomicon of Iggwilv

Magic Items Dungeon Master’s Guide

Fiend that you can see that is trapped within the area of a Magic Circle spell. The Fiend must succeed on a DC 20 Charisma saving throw with Disadvantage or become trapped within one of the Demonomicon

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 mundane and out-of-date copy of the Tome of Zyx, the work that

Rimekin

Species Lorwyn: First Light

cold logic and rejected reactionary responses. As a result, the magical flames that engulfed their bodies took on a frigid air, and they became rimekin. Like flamekin, rimekin possess innate magic

, but the flames they conjure burn icy blue rather than red hot. Further, these “flames” emanate a chilling cold rather than blazing heat. This effect extends, superficially, to the items

Sammaster (Lich Form)

Monsters Forgotten Realms: Adventures in Faerûn

Resistance. Sammaster has Advantage on saving throws against spells and other magical effects. Soul Gem. If Sammaster is reduced to 0 Hit Points while his magical soul gem exists, his lich form dissolves

Tiny object that has AC 20; HP 50; and Immunity to Acid, Necrotic, Poison, and Psychic damage. The gem regains all its Hit Points at the end of every turn, but it turns to dust if reduced to 0 Hit Points

Boon of the Soul Drinker

Feats Forgotten Realms: Heroes of Faerûn

Resistance to Cold damage and Necrotic damage. Siphon Life. When an enemy within 120 feet of you is reduced to 0 Hit Points, you can take a Reaction to regain 50 Hit Points. Once you use this benefit, you can’t use it again until you finish a Short or Long Rest.

Sammaster (Dracolich Form)

Monsters Forgotten Realms: Adventures in Faerûn

until he is reduced to 0 Hit Points. If Sammaster is reduced to 0 Hit Points, his dracolich form dissolves to dust. After 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Soul Gem"} days

Immunity to Acid, Necrotic, Poison, and Psychic damage. The gem regains all its Hit Points at the end of every turn, but it turns to dust if reduced to 0 Hit Points.Multiattack. Sammaster makes three Rend

Vampire Infernalist

Monsters Astarion's Book of Hungers

, the vampire uses Shape-Shift to become mist (no action required). If it can’t use Shape-Shift, it is destroyed. While it has 0 Hit Points in mist form, it can’t return to its vampire form

(if any). The target’s Hit Point maximum decreases by an amount equal to the Necrotic damage taken, and the vampire regains Hit Points equal to that amount. A Humanoid reduced to 0 Hit Points by

Ray of Frost Legacy

Spells Basic Rules (2014)

A frigid beam of blue-white light streaks toward a creature within range. Make a ranged spell attack against the target. On a hit, it takes 1d8 cold damage, and its speed is reduced by 10 feet until

Leomund's Tiny Hut Legacy

Spells Player’s Handbook (2014)

through it freely. All other creatures and objects are barred from passing through it. Spells and other magical effects can’t extend through the dome or be cast through it. The atmosphere inside the

space is comfortable and dry, regardless of the weather outside.Until the spell ends, you can command the interior to become dimly lit or dark. The dome is opaque from the outside, of any color you choose, but it is transparent from the inside.

Tiny Hut Legacy

Spells Basic Rules (2014)

through it freely. All other creatures and objects are barred from passing through it. Spells and other magical effects can't extend through the dome or be cast through it. The atmosphere inside the space

is comfortable and dry, regardless of the weather outside. Until the spell ends, you can command the interior to become dimly lit or dark. The dome is opaque from the outside, of any color you choose, but it is transparent from the inside.

Geryon (Variant)

Monsters Mordenkainen Presents: Monsters of the Multiverse

","rollAction":"Claws"} to hit, reach 15 ft., one target. Hit: 23 (4d6 + 9);{"diceNotation":"4d6+9","rollType":"damage","rollAction":"Claws","rollDamageType":"cold"} cold damage. If the target is Large or smaller

);{"diceNotation":"6d8","rollType":"damage","rollAction":"Claws","rollDamageType":"cold"} cold damage. Stinger. Melee Weapon Attack: +16;{"diceNotation":"1d20+16","rollType":"to hit","rollAction":"Stinger

Torpor (Ingested) Legacy

Equipment

A creature subjected to this poison must succeed on a DC 15 Constitution saving throw or become poisoned for 4d6 hours. The poisoned creature is incapacitated. Ingested. A creature must swallow an

entire dose of ingested poison to suffer its effects. The dose can be delivered in food or a liquid. You may decide that a partial dose has a reduced effect, such as allowing advantage on the saving throw or dealing only half damage on a failed save.

Tlacatecolo

Monsters Journeys through the Radiant Citadel

transforms into a Medium owl, while retaining its game statistics (other than its size). This transformation ends if the tlacatecolo is reduced to 0 hit points or if it uses its action to end it. Plague

wide. Each creature in that area must succeed on a DC 13 Constitution saving throw or take 26 (4d12);{"diceNotation":"4d12","rollType":"damage","rollAction":"Plague Winds","rollDamageType":"cold"} cold

Nightwalker Legacy

Monsters Mordenkainen’s Tome of Foes

to this aura. Life Eater. A creature reduced to 0 hit points from damage dealt by the nightwalker dies and can't be revived by any means short of a wish spell.Multiattack. The nightwalker uses

on a DC 21 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. Finger of Doom

Truth Serum (Ingested) Legacy

Equipment

A creature subjected to this poison must succeed on a DC 11 Constitution saving throw or become poisoned for 1 hour. The poisoned creature can't knowingly speak a lie, as if under the effect of a

reduced effect, such as allowing advantage on the saving throw or dealing only half damage on a failed save.

Geryon

Monsters Mordenkainen Presents: Monsters of the Multiverse

","rollAction":"Claws"} to hit, reach 15 ft., one target. Hit: 23 (4d6 + 9);{"diceNotation":"4d6+9","rollType":"damage","rollAction":"Claws","rollDamageType":"cold"} cold damage. If the target is Large or smaller

);{"diceNotation":"6d8","rollType":"damage","rollAction":"Claws","rollDamageType":"cold"} cold damage. Stinger. Melee Weapon Attack: +16;{"diceNotation":"1d20+16","rollType":"to hit","rollAction":"Stinger

Bheur Hag

Monsters Mordenkainen Presents: Monsters of the Multiverse

+ 3);{"diceNotation":"6d8+3", "rollType":"damage", "rollAction":"Frost Shard", "rollDamageType":"cold"} cold damage, and the target’s speed is reduced by 10 feet until the start of the hag’s

", "rollDamageType":"cold"} cold damage. Frost Shard. Ranged Spell Attack: +6;{"diceNotation":"1d20+6", "rollType":"to hit", "rollAction":"Frost Shard"} to hit, range 60 ft., one target. Hit: 30 (6d8

Fury of the Frost Giant

Feats Bigby Presents: Glory of the Giants

). On a failed save, the creature takes cold damage equal to 1d8 + your proficiency bonus, and its speed is reduced to 0 until the end of its next turn. You can use this reaction a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a long rest.

maximum of 20. Born of Ice. You have resistance to cold damage. Frigid Retaliation. Immediately after a creature you can see within 30 feet of you hits you with an attack roll and deals damage, you can

Snow Maiden

Monsters Curse of Strahd

reduced by an amount equal to the damage taken. This reduction lasts until the creature finishes a long rest. The target dies if this effect reduces its hit point maximum to 0.Cold, Necrotic, PoisonAcid, Fire, Lightning, Thunder; Bludgeoning, Piercing, and Slashing from Nonmagical Attacks

);{"diceNotation":"3d6","rollType":"damage","rollAction":"Life Drain","rollDamageType":"cold"} cold damage. The target must succeed on a DC 10 Constitution saving throw or its hit point maximum is

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

Innate Spellcasting. Geryon's innate spellcasting ability is Charisma (spell save DC 21). He can innately cast the following spells, requiring no material components: At will: alter self (can become

Ice Devil (Spear Variant) Legacy

Monsters Monster Manual (2014)

":"Ice Spear","rollDamageType":"cold"} cold damage. If the target is a creature, it must succeed on a DC 15 Constitution saving throw, or for 1 minute, its speed is reduced by 10 feet; it can take either

","rollAction":"Bite","rollDamageType":"piercing"} piercing damage plus 10 (3d6);{"diceNotation":"3d6","rollType":"damage","rollAction":"Bite","rollDamageType":"cold"} cold damage. Claws. Melee Weapon

Shadow Legacy

Monsters Basic Rules (2014)

, and the target's Strength score is reduced by 1d4;{"diceNotation":"1d4","rollType":"roll","rollAction":"Strength Drain"}. The target dies if this reduces its Strength to 0. Otherwise, the reduction

later.Necrotic, PoisonAcid, Cold, Fire, Lightning, Thunder; Bludgeoning, Piercing, and Slashing from Nonmagical AttacksRadiant

Loadstone

Magic Items Tales from the Yawning Portal

. If you use the Dash or Disengage action while the stone is on your person, its curse activates. Until the curse is broken with remove curse or similar magic, your speed is reduced by 5 feet, and your maximum load and maximum lift capacities are halved. You also become unwilling to part with the stone.

Shadowy Duplicate

Monsters Waterdeep: Dungeon of the Mad Mage

. Sunlight Weakness. While in sunlight, the shadow has disadvantage on attack rolls, ability checks, and saving throws. A duplicate reduced to 0 hit points or targeted by a dispel magic spell vanishes in a

":"2d6+2","rollType":"damage","rollAction":"Strength Drain","rollDamageType":"necrotic"} necrotic damage, and the target's Strength score is reduced by 1d4;{"diceNotation":"1d4","rollType":"roll

Specter Legacy

Monsters Basic Rules (2014)

reduced by an amount equal to the damage taken. This reduction lasts until the creature finishes a long rest. The target dies if this effect reduces its hit point maximum to 0.Necrotic, PoisonAcid, Cold, Fire, Lightning, Thunder; Bludgeoning, Piercing, and Slashing from Nonmagical Attacks

Rime's Binding Ice

Spells Fizban's Treasury of Dragons

A burst of cold energy emanates from you in a 30-foot cone. Each creature in that area must make a Constitution saving throw. On a failed save, a creature takes 3d8 cold damage and is hindered by ice

formations for 1 minute, or until it or another creature within reach of it uses an action to break away the ice. A creature hindered by ice has its speed reduced to 0. On a successful save, a

Robe of Useful Items Legacy

Magic Items Basic Rules (2014)

This robe has cloth patches of various shapes and colors covering it. While wearing the robe, you can use an action to detach one of the patches, causing it to become the object or creature it

, barred on one side of your choice), which you can place in an opening you can reach; it conforms to fit the opening, attaching and hinging itself 23-30 10 gems worth 100 gp each 31-44 Ladder

Lunar Dragon Wyrmling

Monsters Spelljammer: Adventures in Space

","rollDamageType":"piercing"} piercing damage plus 3 (1d6);{"diceNotation":"1d6","rollType":"damage","rollAction":"Bite (cold)","rollDamageType":"cold"} cold damage. Cold Breath (Recharge 5–6);{"diceNotation

":"1d6","rollType":"recharge","rollAction":"Cold Breath"}. The dragon exhales a blast of frost in a 15-foot cone. Each creature in the cone must make a DC 13 Constitution saving throw. On a failed

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