before breath device constructs reaction

Hydra

Monsters Monster Manual

Hold Breath. The hydra can hold its breath for 1 hour. Multiple Heads. The hydra has five heads. Whenever the hydra takes 25 damage or more on a single turn, one of its heads dies. The hydra dies if

damage since its last turn. The hydra regains 20 Hit Points when it grows new heads. Reactive Heads. For each head the hydra has beyond one, it gets an extra Reaction that can be used only for

Robot Controller

Equipment

communicate remotely with each other through the device. Whenever the charmed Construct takes damage, it can repeat the saving throw, ending the effect on itself on a success. Disrupt. Constructs of

This small handheld device features a glass pane with a glowing display that responds to your touch. The controller is powered by an energy cell stored in the device. Placing a full energy cell in

Power Word Heal Legacy

Spells Player’s Handbook (2014)

A wave of healing energy washes over the creature you touch. The target regains all its hit points. If the creature is charmed, frightened, paralyzed, or stunned, the condition ends. If the creature is prone, it can use its reaction to stand up. This spell has no effect on undead or constructs.

Narycrash

Equipment

This backpack-sized device holds a balloon-based parachute. If you fall while wearing this device, you can use your reaction to deploy the parachute. Once deployed, the parachute rapidly inflates

Allip Legacy

Monsters Mordenkainen’s Tome of Foes

Madness","rollDamageType":"psychic"} psychic damage and must use its reaction to make a melee weapon attack against one creature of the allip's choice that the allip can see. Constructs and undead are

stunned until the end of its next turn. On a successful save, it takes half as much damage and isn't stunned. Constructs and undead are immune to this effect.Cold, Necrotic, PoisonAcid, Fire, Lightning, Thunder; Bludgeoning, Piercing, and Slashing from Nonmagical Attacks

Hydra Legacy

Monsters Basic Rules (2014)

Hold Breath. The hydra can hold its breath for 1 hour. Multiple Heads. The hydra has five heads. While it has more than one head, the hydra has advantage on saving throws against being blinded

. Reactive Heads. For each head the hydra has beyond one, it gets an extra reaction that can be used only for opportunity attacks. Wakeful. While the hydra sleeps, at least one of its heads is

Chronolometer

Magic Items Acquisitions Incorporated

While attuned to this device, you have a +1 bonus to Intelligence saving throws. The first time you attune to the chronolometer, you choose one language you don’t know. You subsequently know

that language while attuned to the device. Time Bandit. At the start of your turn, roll a d6 (no action required). On a 1–3, you slow down time, gaining an additional action on your turn and

Clockwork Dragon

Monsters Acquisitions Incorporated

Breath","rollDamageType":"fire"} fire damage on a failed save, or half as much damage on a successful one.These intricately crafted constructs are typically made to reflect the forms of the metallic

":"Bite"} to hit, reach 5 ft., one target. Hit: 7 (1d10 + 2);{"diceNotation":"1d10+2","rollType":"damage","rollAction":"Bite","rollDamageType":"piercing"} piercing damage. Fire Breath (Recharge 5–6). The

Tile Chimera

Monsters Tyranny of Dragons

creature’s tiles.Multiattack. The chimera makes three attacks: one with its bite, one with its horns, and one with its claws. When its fire breath is available, it can use the breath in place of its

. Fire Breath (Recharge 5–6);{"diceNotation":"1d6","rollType":"recharge","rollAction":"Fire Breath"}. The dragon head exhales fire in a 15-foot cone. Each creature in that area must make a DC 15

Dracohydra

Monsters Fizban's Treasury of Dragons

. For each head the dracohydra has beyond one, it gets an extra reaction that can be used only for opportunity attacks. Wakeful. While the dracohydra sleeps, at least one of its heads is

":"poison"}. Prismatic Breath (Recharge 4–6);{"diceNotation":"1d6", "rollType":"recharge", "rollAction":"Prismatic Breath"}. The dracohydra’s heads exhale a single breath of multicolored energy

Allip

Monsters Mordenkainen Presents: Monsters of the Multiverse

", "rollDamageType":"psychic"} psychic damage, and it is stunned until the end of its next turn. On a successful save, it takes half as much damage and isn’t stunned. Constructs and Undead are immune to this

":"2d8+3", "rollType":"damage", "rollAction":"Whispers of Compulsion", "rollDamageType":"psychic"} psychic damage and must use its reaction to make a melee weapon attack against one creature of the

Wheel of Stars

Magic Items Acquisitions Incorporated

While attuned to this device, you have a +1 bonus to Wisdom saving throws, and you can use an action to cast the dancing lights, guidance, or message cantrips. Portent of the Stars. As a reaction

Telepathic Pentacle

Monsters Icewind Dale: Rime of the Frostmaiden

Hold Breath. The Telepathic Pentacle can hold its breath for 1 hour. Multiple Heads. The Telepathic Pentacle has five heads. While it has more than one head, the Telepathic Pentacle has advantage on

. The Telepathic Pentacle regains 10 hit points for each head regrown in this way. Reactive Heads. For each head the Telepathic Pentacle has beyond one, it gets an extra reaction that can be used only

Dragon Army Officer

Monsters Dragonlance: Shadow of the Dragon Queen

shouts orders and targets up to two other creatures within 60 feet of itself. If a target has the Draconic Devotion trait and can hear the officer, the target can use its reaction to make one melee

weapons blessed by Takhisis to strike with the power of the dragons they fight alongside. Dragon Army Weapons The weapons of Dragon Army troops are blessed with an infusion of dragon breath. The type of

Cadaver Collector

Monsters Mordenkainen Presents: Monsters of the Multiverse

", "rollDamageType":"necrotic"} necrotic damage. Paralyzing Breath (Recharge 5–6);{"diceNotation":"1d6", "rollType":"recharge", "rollAction":"Paralyzing Breath"}. The collector releases paralyzing gas in a 30-foot

of a conquering army on the Material Plane. These fearsome Constructs obey their summoners until they are dismissed back to Acheron, but if a summoner comes to a bad end, a cadaver collector might

Ironscale Hydra

Monsters Mythic Odysseys of Theros

","rollDamageType":"acid"} acid damage. Hold Breath. The hydra can hold its breath for 1 hour. Multiple Heads. The hydra has five heads. While it has more than one head, the hydra has advantage on saving throws

each head regrown in this way. Reactive Heads. For each head the hydra has beyond one, it gets an extra reaction that can be used only for opportunity attacks. Wakeful. While the hydra sleeps, at least

Cadaver Collector Legacy

Monsters Mordenkainen’s Tome of Foes

","rollType":"damage","rollAction":"Slam","rollDamageType":"necrotic"} necrotic damage. Paralyzing Breath (Recharge 5-6);{"diceNotation":"1d6","rollType":"recharge","rollAction":"Paralyzing Breath"}. The

until they are called upon by a necromancer, hobgoblin general, or other evil warlord to bolster the ranks of a conquering army. These fearsome constructs obey their summoners until being dismissed

Tiamat

Monsters Tyranny of Dragons

effects. Magic Weapons. Tiamat’s weapon attacks are magical. Multiple Heads. Tiamat can take one reaction per turn, rather than only one per round. She also has advantage on saving throws

legendary action options are associated with her five dragon heads (a bite and a breath weapon for each). Once Tiamat chooses a legendary action option for one of her heads, she can’t choose another

Reborn

Species Van Richten’s Guide to Ravenloft

those of various undead or constructs. The Reborn Origins table provides suggestions for how your character became reborn. Reborn Origins d8 Origins 1 You were magically

perfectly preserved remains. Lamordia. You awoke amid the bizarre experiments of an amoral scientist. They consider you their finest creation or have a task for you to fulfill. Mordent. You emerged from the mysterious device known as the Apparatus, your body a lifeless shell and your past a mystery.

Scaled Ornament

Magic Items Fizban's Treasury of Dragons

dealt by the breath of the dragon in whose hoard the ornament became Wakened, you can use your reaction to take no damage instead, and you regain hit points equal to the damage you would have taken

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

has the properties of a +1 weapon. The bonus increases to +3 when the weapon is used against one of the following creature types, chosen by you at the time of the magic weapon’s creation: aberrations, celestials, constructs, dragons, elementals, fey, fiends, giants, or undead.

Adult Time Dragon

Monsters Planescape: Adventures in the Multiverse

"} slashing damage plus 7 (2d6);{"diceNotation":"2d6", "rollType":"damage", "rollAction":"Rend", "rollDamageType":"force"} force damage. Time Breath (Recharge 5–6);{"diceNotation":"1d6", "rollType

":"recharge", "rollAction":"Time Breath"}. The dragon exhales a wave of shimmering light in a 60-foot cone. Nonmagical objects and vegetation in that area that aren’t being worn or carried crumble to

Witchkite

Monsters Monstrous Compendium Vol. 4: Eldraine Creatures

the following effects of the witchkite’s choice: The target must use its reaction to make a melee attack against another creature of the witchkite’s choice that is within the target

forbidden and dangerous magical secrets. The arcane nature of a witchkite’s hoard seeps into the dragon’s core, granting it spellcasting abilities and twisting its fiery breath into malevolent

Ancient Time Dragon

Monsters Planescape: Adventures in the Multiverse

);{"diceNotation":"3d6", "rollType":"damage", "rollAction":"Rend", "rollDamageType":"force"} force damage. Time Breath (Recharge 5–6);{"diceNotation":"1d6", "rollType":"recharge", "rollAction":"Time

Breath"}. The dragon exhales a wave of shimmering light in a 90-foot cone. Nonmagical objects and vegetation in that area that aren’t being worn or carried crumble to dust. Each creature in that area

Polukranos

Monsters Mythic Odysseys of Theros

","rollDamageType":"acid"} acid damage. Hold Breath. Polukranos can hold its breath for 1 hour. Legendary Resistance (3/Day). If Polukranos fails a saving throw, it can choose to succeed instead. Multiple

beyond one, it gets an extra reaction that can be used only to make opportunity attacks. Siege Monster. Polukranos deals double damage to objects and structures. Wakeful. While Polukranos sleeps, at

Mighty Servant of Leuk-o

Magic Items Tasha’s Cauldron of Everything

conjecture than fact, often referring to otherworldly beings, the mysterious Barrier Peaks in Oerth, and the supposedly related device known as the Machine of Lum the Mad. The best details on the device

’s origins and operation can be found in the Mind of Metal, a tome of artificer’s secrets that connects the device to the traditions of the lost Olman people, and which was written by Lum the

Adult Deep Dragon Legacy

Monsters Fizban's Treasury of Dragons

or uses its action to end it. Nightmare Breath (Recharge 5–6);{"diceNotation":"1d6", "rollType":"recharge", "rollAction":"Nightmare Breath"}. The dragon exhales a cloud of spores in a 60-foot cone

. Each creature in that area must make a DC 16 Wisdom saving throw. On a failed save, the creature takes 33 (6d10);{"diceNotation":"6d10", "rollType":"damage", "rollAction":"Nightmare Breath

Ancient Deep Dragon Legacy

Monsters Fizban's Treasury of Dragons

hit points or uses its action to end it. Nightmare Breath (Recharge 5–6);{"diceNotation":"1d6", "rollType":"recharge", "rollAction":"Nightmare Breath"}. The dragon exhales a cloud of spores in a 90

-foot cone. Each creature in that area must make a DC 19 Wisdom saving throw. On a failed save, the creature takes 49 (9d10);{"diceNotation":"9d10", "rollType":"damage", "rollAction":"Nightmare Breath

Occultant Abacus

Magic Items Acquisitions Incorporated

finish a long rest. Ways to Read the Kill d6 Reading 1 Using a tiny bellows to pump one last breath into a corpse. 2 Reading the entrails with special reading-the-entrails

long rest. Bead of Instant Karma At rank 3, one of the beads on your occultant abacus channels the power of instant karma, turning the occultant abacus into a rare magic item. As a reaction, you can

Zox Clammersham

Compendium - Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage

allows him to command the scaladar. He has put the constructs to work building a device he calls the Simulacrux. This device will, in theory, create a simulacrum of any scaladar that passes through

Narycrash

Compendium - Sources->Dungeons & Dragons->Dragonlance: Shadow of the Dragon Queen

Narycrash This backpack-sized device holds a balloon-based parachute. If you fall while wearing this device, you can use your reaction to deploy the parachute. Once deployed, the parachute rapidly

Mabaran Resonator

Compendium - Sources->Dungeons & Dragons->Eberron: Rising from the Last War

Mabaran Resonator Storm Spire This dread device draws on the power of Mabar, infusing the dead with the malign energy of the Endless Night. While it is active, any humanoid that dies within 2

miles of the resonator reanimates 1 minute later as a zombie (see the Monster Manual for its stat block) under the control of the creature controlling the device. Master’s Call While this looks

Master's Call

Compendium - Sources->Dungeons & Dragons->Wayfinder's Guide to Eberron

Master’s Call While this looks like a scrap heap assembled from shattered constructs, this eldritch machine possesses great power. A creature in control of it can sense the presence and location of

all warforged within 10 miles of the device and can, as an action, send a telepathic message to them laced with enchantment magic. Such a message can be sent no more than once every 24 hours. A

Power Word Heal

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

its hit points. If the creature is charmed, frightened, paralyzed, or stunned, the condition ends. If the creature is prone, it can use its reaction to stand up. This spell has no effect on undead or constructs.

What actions can monsters use to make Opportunity Attack? Are Multiattack and breath weapon actions allowed?

Compendium - Sources->Dungeons & Dragons->Sage Advice & Errata

What actions can monsters use to make Opportunity Attack? Are Multiattack and breath weapon actions allowed? When making an Opportunity Attack, a monster can make any single melee attack listed in

its stat block. A monster also has the option to make an Unarmed Strike as an Opportunity Attack, following the normal rules of an Unarmed Strike. An action, such as a breath weapon effect, that doesn’t

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