construct reaction greatest to have requires

Master's Amulet

Magic Items Dungeon Master’s Guide

damage. Crafting an amulet requires 1 week and costs 1,000 gp in components. A shield guardian’s solitary focus is to protect the amulet’s wearer. The amulet’s wearer can command the

guardian to attack its enemies or to guard the wielder against attack. If an attack threatens to injure the wearer, the construct can magically absorb the blow into its own body, even at a distance.

Lyre of Building

Magic Items Tasha’s Cauldron of Everything

While holding this lyre, you can cast mending as an action. You can also play the lyre as a reaction when an object or a structure you can see within 300 feet of you takes damage, causing it to be

immune to that damage and any further damage of the same type until the start of your next turn. In addition, you can play the lyre as an action to cast fabricate, move earth, passwall, or summon construct (appears in this book), and that spell can’t be cast from it again until the next dawn.

Hill Giant Avalancher

Monsters Bigby Presents: Glory of the Giants

Hill Rebuff reaction. The object bearing the rune has AC 15; 20 hit points; and immunity to necrotic, poison, and psychic damage. The object regains all its hit points at the end of every turn, but

Stone Avalanche (Requires Hill Rune). The giant conjures a hail of rocks in a 20-foot-radius, 40-foot-high cylinder centered on a point on the ground it can see within 120 feet of itself. Each creature

Vampiric Mist Legacy

Monsters Tales from the Yawning Portal

Life Sense. The mist can sense the location of any creature within 60 feet of it, unless that creature’s type is construct or undead. Forbiddance. The mist can’t enter a residence

without squeezing. Each foot of movement in water costs it 2 extra feet, rather than 1 extra foot. The mist can’t manipulate objects in any way that requires fingers or manual dexterity. Sunlight

Nabassu

Monsters Mordenkainen Presents: Monsters of the Multiverse

creature it has killed within the last hour, provided that creature is neither a Construct nor an Undead. The devouring requires the nabassu to be within 5 feet of the corpse for at least 10 minutes, after

":"damage","rollAction":"Claws","rollDamageType":"force"} force damage. Soul-Stealing Gaze.The nabassu targets one creature it can see within 30 feet of it. If the target isn’t a Construct or an

Frost Giant Ice Shaper

Monsters Bigby Presents: Glory of the Giants

action and Ice Armor reaction. The object bearing the rune has AC 16; 40 hit points; and immunity to necrotic, poison, and psychic damage. The object regains all its hit points at the end of every turn

until the end of its next turn. On a successful save, the target’s speed is reduced by 10 feet until the end of its next turn. Ice Wolves (Requires Frost Rune). The giant magically summons 1d4

Tile Chimera

Monsters Tyranny of Dragons

one.Narrow Dodge. When targeted by a melee attack, the tile chimera can take a reaction to turn its narrowest aspect toward the attacker. The attacker has disadvantage on the attack roll.A chimera is a

. The tile chimera acts as a normal chimera magically animated, except it is a construct that doesn’t breathe, drink, eat, or sleep. It makes a clacking noise as it moves, and when injured, it

Dream Eater

Monsters Monstrous Compendium Vol. 2: Dragonlance Creatures

foes’ greatest fears. However, all dream eaters share one thing: a gaping, always-smiling mouth, which it reveals before engulfing its prey in a phantasmagorical nightmare. The key to defeating a

eater. A creature within 15 feet of the dream eater also can use its action to attempt to free an engulfed target. Doing so requires the creature to use its action to make a DC 16 Charisma (Persuasion

Mordakhesh

Monsters Eberron: Rising from the Last War

up to two allies that he can see within 30 feet of him. If a target can see and hear him, the target can make one weapon attack as a reaction and gains advantage on the attack roll.In the age when

fiends and dragons waged war across Eberron, rakshasas served the fiendish lords as strategists and generals. A rakshasa named Mordakhesh rose up through the ranks to become one of the greatest

Strongheart

Monsters The Wild Beyond the Witchlight

, Strongheart can use his reaction to impose disadvantage on the attack roll, provided he is carrying a shield.Strongheart is a fearless seeker of justice, risking his life to ensure that good triumphs over

individuals who believe that good must triumph over evil. Its members are also my friends.” Flaw. “I am prepared—my friends might say too prepared—to sacrifice myself for the greatest

Orb of the Stein Rune

Magic Items Storm King's Thunder

attacks. Boots. The pair of boots is now an uncommon magic item that requires attunement. While you wear the boots, you have advantage on Strength saving throws, and you can use your reaction to avoid being knocked prone.

there with your finger. The transfer takes 8 hours of work that requires the two items to be within 5 feet of each other. At the end, the orb is destroyed, and the rune appears in silver on the chosen

Rakdos

Monsters Guildmasters’ Guide to Ravnica

charmed by him must use its reaction to move up to half its speed toward the creature closest to it that it can see, provided it isn’t already within 5 feet of that creature. It then must make

spell or any other effect that requires concentration. The poisoned creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.Fire, PoisonNecrotic; Bludgeoning, Piercing, and Slashing from Nonmagical Attacks

Vampiric Mist

Monsters Mordenkainen Presents: Monsters of the Multiverse

Life Sense. The mist can sense the location of any creature within 60 feet of it, unless that creature’s type is Construct or Undead. Forbiddance. The mist can’t enter a residence

without squeezing. Each foot of movement in water costs it 2 extra feet, rather than 1 extra foot. The mist can’t manipulate objects in any way that requires fingers or manual dexterity. Sunlight

Shield Guardian Amulet

Magic Items Icewind Dale: Rime of the Frostmaiden

amulet requires 1 week and costs 1,000 gp in components. A shield guardian’s solitary focus is to protect the amulet’s wearer. The amulet’s wearer can command the guardian to attack

its enemies or to guard the wielder against attack. If an attack threatens to injure the wearer, the construct can magically absorb the blow into its own body, even at a distance. A humanoid that

Goose Mother

Monsters Monstrous Compendium Vol. 4: Eldraine Creatures

an extra reaction that can be used only for opportunity attack;opportunity attacks. Wakeful. While the Goose Mother sleeps, at least one of its heads is awake.Multiattack. The Goose Mother makes as

", "rollAction":"Lullaby of Honks"}; Requires at Least Two Heads). The Goose Mother’s heads honk a discordant lullaby. Each creature of the Goose Mother’s choice within 10 feet of it must make a

Cloud Giant Destiny Gambler

Monsters Bigby Presents: Glory of the Giants

Thunderous Clap action and Negate Spell reaction. The mask bearing the cloud rune has AC 15; 45 hit points; and immunity to necrotic, poison, and psychic damage. The mask regains all its hit points at

): At will: detect magic, fog cloud, light, minor illusion 1/day each: dream (as an action), gaseous form, major image Thunderous Clap (Requires Cloud Rune). The giant magically summons a thundercloud

Fomorian Warlock of the Dark

Monsters Bigby Presents: Glory of the Giants

action and Poisoning Rebuke reaction. The object bearing the blood rune has AC 15; 30 hit points; and immunity to necrotic, poison, and psychic damage. The object regains all its hit points at the end

. Corrupting Hex (Requires Blood Rune). The fomorian targets one creature it can see within 60 feet of itself. The target must succeed on a DC 16 Charisma saving throw or take 27 (6d8);{"diceNotation":"6d8

Shield of the Uven Rune

Magic Items Waterdeep: Dungeon of the Mad Mage

cold damage. Deadly Rebuke. Immediately after a creature hits you with a melee attack, you can use your reaction to deal 3d6 necrotic damage to that creature. Bane. You can cast the bane spell from

. Gift of Vengeance. You can transfer the shield’s magic to a nonmagical weapon by tracing the uven rune on the weapon with one finger. The transfer takes 8 hours of work that requires the two

Pennant of the Vind Rune

Magic Items Storm King's Thunder

another means of staying aloft. Comforting Wind. You can’t suffocate. Wind’s Grasp. As a reaction when you fall, you can cause yourself to take no damage from the fall. Once you use this

; by tracing the vind rune there with your finger. The transfer takes 8 hours of work that requires the two items to be within 5 feet of each other. At the end, the pennant is destroyed, and the rune

Mighty Servant of Leuk-o

Magic Items Tasha’s Cauldron of Everything

Named for the warlord who infamously employed it, the Mighty Servant of Leuk-o is a fantastically powerful, 10-foot-tall machine that turns into an animate construct when piloted. Crafted of a

attuned to the artifact. Attuning to the artifact requires two hours, which can be undertaken as part of a long rest, during which time you must be inside the servant, interacting with its controls

Rak Tulkhesh

Monsters Eberron: Rising from the Last War

). Each creature within 60 feet of Rak Tulkhesh must succeed on a DC 24 Wisdom saving throw or use its reaction to make a melee weapon attack against a random creature within reach. If no creatures

roll.Overlords In the first days of the world, the children of Khyber rose from the darkness to reign over Eberron. The greatest among them were the overlords, who held dominion over a world of fear, war, and

Baphomet

Monsters Mordenkainen Presents: Monsters of the Multiverse

cultist’s forehead. In time, a devoted cultist might transform entirely into a minotaur, which is considered the greatest gift of the Prince of Beasts. Baphomet appears as a fearsome, 20-foot-tall

after a Short or Long Rest). As an action, this creature allows each ally within 30 feet of it that has the Unerring Tracker trait to make one weapon attack as a reaction against the target of that

Adult Crystal Dragon

Monsters Fizban's Treasury of Dragons

claimed it. 2 Prismatic shards rain from the sky in a beautiful but dangerous display. Rumors quickly spread that a crystal dragon is responsible. 3 A crystal dragon invites the greatest

the dragon keeps the greatest treasures. As with everything in the lair, nothing is truly off-limits to visitors, as long as they show themselves to be peaceful and respectful (or very, very interesting

Ancient Crystal Dragon

Monsters Fizban's Treasury of Dragons

the greatest bards and philosophers to partake in “the Great Dialogue” in the dragon’s mountaintop lair. But only the dragon knows that the Great Dialogue has no end, and no one can

hollow, and built into its upper recesses are several icy perches where the dragon keeps the greatest treasures. As with everything in the lair, nothing is truly off-limits to visitors, as long as they

Nabassu Legacy

Monsters Mordenkainen’s Tome of Foes

creature it has killed within the last hour, provided that creature is neither a construct nor an undead. The devouring requires the nabassu to be within 5 feet of the corpse for at least 10 minutes, after

the nabassu and isn’t a construct or an undead, it must succeed on a DC 16 Charisma saving throw or reduce its hit point maximum by 13 (2d12);{"diceNotation":"2d12","rollType":"roll","rollAction

Dominate Monster Legacy

Spells Basic Rules (2014)

do. During this time, you can also cause the creature to use a reaction, but this requires you to use your own reaction as well. Each time the target takes damage, it makes a new Wisdom saving throw

Dominate Beast Legacy

Spells Basic Rules (2014)

. During this time, you can also cause the creature to use a reaction, but this requires you to use your own reaction as well. Each time the target takes damage, it makes a new Wisdom saving throw against

Dominate Person Legacy

Spells Basic Rules (2014)

. During this time you can also cause the creature to use a reaction, but this requires you to use your own reaction as well. Each time the target takes damage, it makes a new Wisdom saving throw

Double Spear

equipment

Mastery of Advanced Weapons requires military training and skill. To use any of the special properties or the Weapon Mastery properties of the Double Spear, you must take the Advanced Weapon

attack. If a target enters your reach while you wield a weapon with this property, you can use your Reaction to make a melee attack with the weapon against that target.

Find Familiar Legacy

Spells Basic Rules (2014)

familiar can deliver the spell as if it had cast the spell. Your familiar must be within 100 feet of you, and it must use its reaction to deliver the spell when you cast it. If the spell requires an attack roll, you use your attack modifier for the roll.

Lyre of Building

Compendium - Sources->Dungeons & Dragons->Tasha’s Cauldron of Everything

Lyre of Building Wondrous item, rare (requires attunement by a bard) While holding this lyre, you can cast mending as an action. You can also play the lyre as a reaction when an object or a structure

as an action to cast fabricate, move earth, passwall, or summon construct (appears in this book), and that spell can’t be cast from it again until the next dawn.

Bard Legacy

Classes Basic Rules (2014)

still resound throughout the cosmos. The music of bards is an attempt to snatch and harness those echoes, subtly woven into their spells and powers. The greatest strength of bards is their sheer

from Experience True bards are not common in the world. Not every minstrel singing in a tavern or jester cavorting in a royal court is a bard. Discovering the magic hidden in music requires hard study

Powered Armor

Magic Items Lost Laboratory of Kwalish

), but doesn’t gain access to the user’s knowledge, features, or proficiencies. Freeing a creature trapped inside the armor first requires defeating the armor’s automatic defenses

. Freeing the user first requires defeating the armor’s automatic defenses (as above). A creature in stasis does not make Charisma saving throws to break the armor’s control. Alternative

Yuan-ti Pureblood Legacy

Species Volo's Guide to Monsters

transformation. Every use of the ritual must be modified to suit the individual undergoing transformation, and requires rare herbs, exotic magical substances, snakes, and one or more humans to be sacrificed

they don’t believe they have a reasonable chance of success. This reaction isn’t out of cowardice, but practicality—yuan-ti value their own lives much too highly to risk them when the

Sword of Life Stealing

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

Sword of Life Stealing Weapon (any sword), rare (requires attunement) When you attack a creature with this magic weapon and roll a 20 on the attack roll, that target takes an extra 10 necrotic damage if it isn't a construct or an undead. You also gain 10 temporary hit points.

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