before being down causes reaction

Gadabout

Monsters Monstrous Compendium Vol. 1: Spelljammer Creatures

target to escape the grapple causes the gadabout to use its reaction to move into the nearest unoccupied space. While grappled by the gadabout, the target determines where the gadabout moves on the

Flind

Monsters Mordenkainen Presents: Monsters of the Multiverse

"} bludgeoning damage, and the target must make a DC 16 Wisdom saving throw. On a failed save, the target must use its reaction, if available, to make one melee attack against a random creature, other than

Yeenoghu, a flind uses demonic insight to guide the gnolls toward weak prey ripe for slaughter. Unlike other leaders who might skulk behind their minions, a flind leads the charge in battle. Its flail causes wracking pain, paralysis, and disorientation in those it strikes.

Duergar Mind Master Legacy

Monsters Mordenkainen’s Tome of Foes

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

Zuggtmoy Legacy

Monsters Out of the Abyss

Thrall. When Zuggtmoy is hit by an attack, one creature within 5 feet of Zuggtmoy that is charmed by her must use its reaction to be hit by the attack instead.Zuggtmoy can take 3 legendary actions

turn. Attack. Zuggtmoy makes one pseudopod attack. Exert Will. One creature charmed by Zuggtmoy that she can see must use its reaction to move up to its speed as she directs or to make a weapon

Geryon (Variant)

Monsters Mordenkainen Presents: Monsters of the Multiverse

teleports, along with any equipment he is wearing and carrying, up to 120 feet to an unoccupied space he can see. Sound the Horn (1/Day). Geryon blows his horn, which causes 5d4;{"diceNotation":"5d4

one of the following lair actions; he can’t take the same lair action two rounds in a row: Banish. Geryon casts the banishment spell. Chill Blast. Geryon causes a blast of cold to burst from the

Geryon

Monsters Mordenkainen Presents: Monsters of the Multiverse

following lair actions; he can’t take the same lair action two rounds in a row: Banish. Geryon casts the banishment spell. Chill Blast. Geryon causes a blast of cold to burst from the ground

–6). As a reaction when this creature takes damage, it can roll a d10 and subtract the number rolled from the damage. Geryon (Variant);VARIANT: SOUND THE HORN Geryon can have an action that

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

Archon of Falling Stars

Monsters Mythic Odysseys of Theros

makes a radiant spear attack, and then its mount can use its reaction to make a melee weapon attack. Return to Nyx (Costs 3 Actions). The archon causes a corpse it can see within 30 feet of it to burst

Yeenoghu Legacy

Monsters Out of the Abyss

same effect two rounds in a row. Yeenoghu causes an iron spike—5 feet tall and 1 inch in diameter—to burst from the ground at a point he can see within 100 feet of him. Any creature in

condition. Each gnoll or hyena that Yeenoghu can see can use its reaction to move up to its speed. Until the next initiative count 20, all gnoll;gnolls and hyena;hyenas within the lair are enraged

Yeenoghu

Monsters Mordenkainen Presents: Monsters of the Multiverse

. Yeenoghu causes an iron spike—5 feet tall and 1 inch in diameter—to burst from the ground at a point he can see within 100 feet of him. Any creature in the space where the spike emerges

or hyena that Yeenoghu can see can use its reaction to move up to its speed. Regional Effects The region containing Yeenoghu’s lair is warped by his magic, creating one or more of the

Zuggtmoy

Monsters Mordenkainen Presents: Monsters of the Multiverse

. One creature charmed by Zuggtmoy that she can see must use its reaction, if available, to move up to its speed as she directs or to make one weapon attack against a target that she designates.The Demon

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

Adult Deep Dragon Legacy

Monsters Fizban's Treasury of Dragons

creature within 30 feet of it that it can see. The target must succeed on a DC 16 Wisdom saving throw or use its reaction to make a melee weapon attack against a random creature within reach. If no

creatures are within reach, or the target can’t take a reaction, it takes 5 (1d10);{"diceNotation":"1d10", "rollType":"damage", "rollAction":"Commanding Spores", "rollDamageType":"psychic"} psychic

Ancient Deep Dragon Legacy

Monsters Fizban's Treasury of Dragons

around a creature within 30 feet of it that it can see. The target must succeed on a DC 19 Wisdom saving throw or use its reaction to make a melee weapon attack against a random creature within reach. If

no creatures are within reach, or the target can’t take a reaction, it takes 11 (2d10);{"diceNotation":"2d10", "rollType":"damage", "rollAction":"Commanding Spores", "rollDamageType":"psychic

57. Oubliette

Compendium - Sources->Dungeons & Dragons->Tomb of Annihilation

resets. Pulling the lever in the left nostril causes the mouth of the devil face to open wide, revealing a gullet filled with impenetrable darkness that pulls in everything in the room. Initiative

and destroyed. If a character fails the saving throw, another character within reach, or any character bound to the first character by a rope, can use his or her reaction to grab on and grant the

Samurai

Compendium - Sources->Dungeons & Dragons->Xanathar's Guide to Everything

gain a bonus to the check equal to your Wisdom modifier. Your self-control also causes you to gain proficiency in Wisdom saving throws. If you already have this proficiency, you instead gain proficiency

, your fighting spirit can delay the grasp of death. If you take damage that reduces you to 0 hit points and doesn’t kill you outright, you can use your reaction to delay falling unconscious, and you can

Flind

Compendium - Sources->Dungeons & Dragons->Monsters of the Multiverse

insight to guide the gnolls toward weak prey ripe for slaughter. Unlike other leaders who might skulk behind their minions, a flind leads the charge in battle. Its flail causes wracking pain, paralysis

, the target must use its reaction, if available, to make one melee attack against a random creature, other than the flind, within its reach. If there’s no creature within reach, the target instead

Rogue

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

hit by? Spell attacks too? A use of Uncanny Dodge works against only one attack, since it expends your Reaction, and only if you can see the attacker. It works against attacks of all sorts, including

? Yes. Being surprised at the start of a combat causes a creature to have Disadvantage on the Initiative roll. A Rogue can use Evasion as long as they don’t have the Incapacitated condition. Can the

Gadabout

Compendium - Sources->Dungeons & Dragons->Monstrous Compendium Volume One: Spelljammer Creatures

within 5 feet of itself and gently wraps its branches around the target. The target is grappled (escape DC 0). Any attempt by the target to escape the grapple causes the gadabout to use its reaction

Duergar Mind Master

Compendium - Sources->Dungeons & Dragons->Mordenkainen's Tome of Foes

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 direction of the duergar’s choice. Creatures that can’t be charmed

Yeenoghu's Lair

Compendium - Sources->Dungeons & Dragons->Out of the Abyss

(losing initiative ties), Yeenoghu can take a lair action to cause one of the following effects; he can’t use the same effect two rounds in a row. Yeenoghu causes an iron spike — 5 feet tall and 1 inch in

condition. Each gnoll or hyena that Yeenoghu can see can use its reaction to move up to its speed. Until the next initiative count 20, all gnolls and hyenas within the lair are enraged, causing them to

The Nematode

Compendium - Sources->Dungeons & Dragons->Phandelver and Below: The Shattered Obelisk

creature to open its mouth but would also trigger a dangerous physical reaction. Releasing the fluid through a small hole in the proper place causes the creature to open its mouth without triggering

requires the following steps: Dangerous Reaction. A character who succeeds on a DC 10 Wisdom (Medicine) or Intelligence (Nature) check realizes that destroying the membrane entirely would force the

Yeenoghu's Lair

Compendium - Sources->Dungeons & Dragons->Mordenkainen's Tome of Foes

(losing initiative ties), Yeenoghu can take a lair action to cause one of the following effects; he can’t use the same effect two rounds in a row: Yeenoghu causes an iron spike — 5 feet tall and 1 inch in

condition. Each gnoll or hyena that Yeenoghu can see can use its reaction to move up to its speed. Until the next initiative count 20, all gnolls and hyenas within the lair are enraged, causing them to

Gathered Whispers

Compendium - Sources->Dungeons & Dragons->Van Richten’s Guide to Ravenloft

this spell is Intelligence, Wisdom, or Charisma (your choice when you gain this Dark Gift). Sudden Cacophony. When you are hit by an attack roll, you can use your reaction to channel your haunting

spirits, letting their voices howl through you. If the attacker isn’t deafened, add your proficiency bonus to your AC against that attack, potentially causing it to miss. Once this trait causes an attack

Melee Attacks

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

make the opportunity attack, you use your reaction to make one melee attack against the provoking creature. The attack occurs right before the creature leaves your reach. You can avoid provoking an

opportunity attack by taking the Disengage action. You also don't provoke an opportunity attack when you teleport or when someone or something moves you without using your movement, action, or reaction

Melee Attacks

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

make the opportunity attack, you use your reaction to make one melee attack against the provoking creature. The attack occurs right before the creature leaves your reach. You can avoid provoking an

opportunity attack by taking the Disengage action. You also don’t provoke an opportunity attack when you teleport or when someone or something moves you without using your movement, action, or reaction

Forest Master

Compendium - Sources->Dungeons & Dragons->Monstrous Compendium Volume Two

, pass without trace, speak with plants Bonus Action Erupting Briars (Recharge 4–6). The Forest Master touches his horn to the earth and causes a 5-foot-tall wall of briars to erupt in a 90-foot

) piercing damage. Reaction Misty Escape. If the Forest Master takes damage from a melee attack, he, along with any equipment he is wearing or carrying, teleports to an unoccupied space within 30 feet that he can see.

Storm Sorcery

Compendium - Sources->Dungeons & Dragons->Sword Coast Adventurer’s Guide

or thunder damage, stormy magic erupts from you. This eruption causes creatures of your choice that you can see within 10 feet of you to take lightning or thunder damage (choose each time this

you are hit by a melee attack, you can use your reaction to deal lightning damage to the attacker. The damage equals your sorcerer level. The attacker must also make a Strength saving throw against

Storm Sorcery

Compendium - Sources->Dungeons & Dragons->Xanathar's Guide to Everything

casting a spell of 1st level or higher that deals lightning or thunder damage, stormy magic erupts from you. This eruption causes creatures of your choice that you can see within 10 feet of you to

speed of the wind. Storm’s Fury Starting at 14th level, when you are hit by a melee attack, you can use your reaction to deal lightning damage to the attacker. The damage equals your sorcerer level. The

Action Options

Compendium - Sources->Dungeons & Dragons->Dungeon Master’s Guide (2014)

or Dexterity (Acrobatics) check. If the attacker wins the contest, the attack causes no damage or other ill effect, but the defender drops the item. The attacker has disadvantage on its attack roll if

opportunity attack it makes against the marked target has advantage. The opportunity attack doesn’t expend the attacker’s reaction, but the attacker can’t make the attack if anything, such as the

Paladin Subclasses

Compendium - Sources->Dungeons & Dragons->Player’s Handbook

you can see within 10 feet of you is hit by an attack roll, you can take a Reaction to grant a bonus to the target’s AC against that attack, potentially causing it to miss. The bonus equals your

Charisma modifier (minimum of +1). If the attack misses, you can make one attack with a weapon against the attacker as part of this Reaction if the attacker is within your weapon’s range. You can use this

Geryon

Compendium - Sources->Dungeons & Dragons->Monsters of the Multiverse

Blast. Geryon causes a blast of cold to burst from the ground at a point he can see within 120 feet of him. The cold fills a cube, 10 feet on each side, centered on that point. Each creature in that

the next minute. The bonus equals its Strength modifier (minimum of +1). Indomitable Strength (Recharge 5–6). As a reaction when this creature takes damage, it can roll a d10 and subtract the number

Meetings with Sarusanda

Compendium - Sources->Dungeons & Dragons->Vecna: Eve of Ruin

), each of whom is stable at 0 hit points. When the characters enter the room, each priest’s Tattoo of Osybus trait causes the priest to rise on its next turn, at which point it attacks the characters

. Regardless of the characters’ reaction to this revelation, learning it counts as a secret for the purposes of the Power of Secrets rules in this book’s introduction.

Duergar

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

attacker has disadvantage on the attack roll. On a hit, the attack deals an extra 5 (1d10) damage to the hammerer, and the hammerer can respond by using its Multiattack with its reaction. Siege Monster

invisible with it. Mind Mastery. 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

Archons

Compendium - Sources->Dungeons & Dragons->Mythic Odysseys of Theros

archon makes a radiant spear attack, and then its mount can use its reaction to make a melee weapon attack. Return to Nyx (Costs 3 Actions). The archon causes a corpse it can see within 30 feet of it

ashen blade or bolt of ash, and then its mount can use its reaction to make a melee weapon attack. Reduce to Ash (Costs 3 Actions). The ashen rider targets a creature it can see within 60 feet of it

Lorehold Deans' Wing Locations

Compendium - Sources->Dungeons & Dragons->Strixhaven: A Curriculum of Chaos

after hours and proceeds more than 10 feet down the hall causes the portraits to watch the interloper and whisper. If a character proceeds more than 20 feet down the hall without addressing the

damage and must immediately use its reaction, if available, to move as far as its speed allows out of the Lorehold Deans’ Wing. If the creature succeeds, it takes half as much damage and doesn’t have

D&D Beyond

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