before burst devising constantly reaction

Iarno “Glasstaff” Albrek

Monsters Phandelver and Below: The Shattered Obelisk

Special Equipment. Glasstaff wields a staff of defense (see appendix B). With the staff in hand, he can use an action to cast the mage armor spell and use his reaction to cast the shield

spell.Multiattack. Glasstaff makes two Shocking Burst attacks. Shocking Burst. Melee or Ranged Spell Attack: +5;{"diceNotation":"1d20+5", "rollType":"spell", "rollAction":"Shocking Burst"} to hit, reach 5 ft. or

Rime Hulk

Monsters Bigby Presents: Glory of the Giants

forms are unstable, constantly breaking apart and reforming as clouds of frost billow off them. As a rime hulk moves, it leaves a trail of ice that can freeze enemies in place. When it dies, a rime hulk explodes in a burst of frost.Cold, Poison

Death Burst. When the rime hulk dies, it explodes in a 10-foot-radius sphere of frigid air and frost centered on itself. Each creature in that area must succeed on a DC 15 Constitution saving throw

Animated Breath (Lightning Form)

Monsters Fizban's Treasury of Dragons

animated lightning breath is a constantly shifting form of crackling lightning, and it can suddenly vanish from one place to reappear in another, striking like a bolt from the blue.LightningLightning

Burst (Lightning Form Only). The animated breath magically teleports to an unoccupied space it can see within 30 feet of it. Each creature with 5 feet of the animated breath after it teleports takes 3

Mist Hulk

Monsters Bigby Presents: Glory of the Giants

Air Form. The mist hulk can enter another creature’s space and stop there. It can move through a space as narrow as 1 inch without squeezing. Death Burst. When the mist hulk dies, it bursts in

":"Death Burst", "rollDamageType":"bludgeoning"} bludgeoning damage and has the prone condition. On a successful save, a creature takes half as much damage only.Multiattack. The mist hulk makes two Slam

Zuggtmoy Legacy

Monsters Out of the Abyss

":"Pseudopod","rollDamageType":"poison"} poison damage. Infestation Spores (3/Day). Zuggtmoy releases spores that burst out in a cloud that fills a 20-foot-radius sphere centered on her, and it

","rollType":"recharge","rollAction":"Mind Control Spores"}. Zuggtmoy releases spores that burst out in a cloud that fills a 20-foot-radius sphere centered on her, and it lingers for 1 minute. Humanoids and

Animated Breath

Monsters Fizban's Treasury of Dragons

green gas, while a white dragon’s animated cold breath looks like a walking ice sculpture with frigid air whirling around it. A blue dragon’s animated lightning breath is a constantly

, fire, lightning, or poison)Lightning Burst (Lightning Form Only). The animated breath magically teleports to an unoccupied space it can see within 30 feet of it. Each creature with 5 feet of the

Coral

Monsters Misplaced Monsters: Volume One

":"bludgeoning"} bludgeoning damage. Tail Thump. Coral slams her tail down, unleashing a burst of magical force toward one creature she can see within 60 feet of her. The target must make a DC 16 Dexterity

target gains 11 (2d8 + 2);{"diceNotation":"2d8+2", "rollType":"roll", "rollAction":"Bolstering Treat"} temporary hit points if it immediately uses its reaction to eat one of the cookies. Any leftover

Eldritch Staff

Magic Items The Wild Beyond the Witchlight

expend the last charge, roll a d20. On a 1, the staff is destroyed in an otherwise harmless burst of eldritch energy. Eldritch Attack. When you hit with a melee attack using the staff, you can expend

up to 3 of its charges. For each charge you expend, the target takes an extra 1d8 lightning damage. Eldritch Escape. If you take damage while holding the staff, you can use your reaction to expend 3

Duergar Kavalrachni

Monsters Mordenkainen Presents: Monsters of the Multiverse

Cavalry Training. When the duergar hits a target with a melee attack while mounted, the mount can use its reaction to make one melee attack against the same target. Duergar Resilience. The duergar

many who dwell in the Underdark, duergar must constantly be on guard against the raids and plots of their neighbors. To this end, duergar warriors fulfill a variety of combat roles, often marrying

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

failed save, the target has the restrained condition until the start of the giant’s next turn, and the stones erupt in a burst of thunderous energy that deals 14 (4d6);{"diceNotation":"4d6

Quickling

Monsters Mordenkainen Presents: Monsters of the Multiverse

lacks meaning. To other creatures, a quickling seems blindingly fast, vanishing into an indistinct blur when it moves. Its cruel laughter is a burst of rapid staccato sounds, its speech a shrill

constantly paces and shifts in place, as though it can’t wait to be off again. Quicklings have a capricious nature and are always up to something. A quickling spends most of its time perpetrating

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

Dandylion

Monsters Misplaced Monsters: Volume One

a bonus action. Rejuvenating Seedpods (2/Day). The dandylion releases a burst of seedpods from its tail, filling a 10-foot-radius sphere centered on itself. Each creature of the dandylion’s

reaction must succeed on a DC 15 Wisdom saving throw or have the frightened condition until the end of the dandylion’s next turn. Created by Jones D.-D. Dandylions are herbivorous farmers who

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

with a burst of radiance. Each creature of the archon’s choice within 30 feet of it must succeed on a DC 16 Constitution saving throw, or the creature takes 13 (3d8);{"diceNotation":"3d8

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

if it tries to cast a spell, it must first succeed on a DC 16 Intelligence check or the spell fails and is wasted. Eldritch Burst. Magical energy explodes in a 20-foot-radius sphere centered on a

Scion of Memnor

Monsters Bigby Presents: Glory of the Giants

space as close as possible to the center. Then a burst of thunder erupts in a 30-foot-radius sphere centered on the same point. Each creature in that area takes 52 (8d12);{"diceNotation":"8d12

turn.A slumbering scion of Memnor appears as a dense, slowly drifting tower of clouds that never dissipates. Often, this cloud lingers over a remote valley, creating a constantly overcast sky. Sapient

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

works of grand but melancholic beauty, while in others, it manifests as rage. Like many who dwell in the Underdark, duergar must constantly be on guard against the raids and plots of their neighbors. To

Duergar Warlord

Monsters Mordenkainen Presents: Monsters of the Multiverse

use their reaction to make one weapon attack. Invisibility (Recharge 4–6);{"diceNotation":"1d6", "rollType":"recharge", "rollAction":"Invisibility"}. The duergar magically turns invisible for up to 1

dwell in the Underdark, duergar must constantly be on guard against the raids and plots of their neighbors. To this end, duergar warriors fulfill a variety of combat roles, often marrying their fury in

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

, LightningInfestation Spores (3/Day). Zuggtmoy releases spores that burst out in a cloud that fills a 20-foot-radius sphere centered on her, and it lingers for 1 minute. Any creature in the cloud when it

Baphomet

Monsters Mordenkainen Presents: Monsters of the Multiverse

frightened and disoriented, as though constantly under threat of being hunted, and might lash out or panic even when no visible threat is nearby. If Baphomet dies, these effects fade over the course of

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

Geryon (Variant)

Monsters Mordenkainen Presents: Monsters of the Multiverse

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

(Recharge 5–6). As a reaction when this creature takes damage, it can roll a d10 and subtract the number rolled from the damage. Cold, Fire, PoisonBludgeoning, Piercing, and Slashing from Nonmagical Attacks that aren't Silvered

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

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

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

Belashyrra

Monsters Eberron: Rising from the Last War

succeed on a DC 22 Wisdom saving throw or take 22 (4d10);{"diceNotation":"4d10","rollType":"damage","rollAction":"Implant Fear","rollDamageType":"psychic"} psychic damage and immediately use its reaction

Dungeon Master’s Guide has more information on madness. Madness of Belashyrra d6 Flaw (lasts until cured) 1 “I constantly see shapes moving in the shadows.” 2

Invigorated March

Compendium - Sources->Dungeons & Dragons->Flee, Mortals! Rule Primer

Invigorated March 3rd-Order Metamorphosis Power Manifestation Time: 1 bonus action Range: 30 feet Duration: Instantaneous You emit a burst of mentally invigorating energy into the mind of a

creature you can see within range. That creature can use their reaction, if available, to move up to their speed without provoking opportunity attacks. Increased Order. When you manifest this power, you can increase its order by 1 or more. For each increase of 1, you target one additional creature.

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

The Infernal Machine of Lum the Mad

Magic Items Infernal Machine Rebuild

cut an astral projection’s silvery cord—the user suffers a sudden burst of feedback from the machine that kills them instantly. Any effect of the Infernal Machine that requires

make an Intelligence check or use divination magic to learn something about a creature, that knowledge comes with added trivia of the DM’s devising. 05 You emanate a weak magnetic aura

Smoke Mephit

Compendium - Sources->Dungeons & Dragons->Monster Manual (2014)

Smoke Mephit Smoke mephits are crude, lazy creatures of air and fire that billow smoke constantly. They rarely speak the truth and love to mock and mislead other creatures. Smoke Mephit Small

1/4 (50 XP) Death Burst. When the mephit dies, it leaves behind a cloud of smoke that fills a 5-foot-radius sphere centered on its space. The sphere is heavily obscured. Wind disperses the cloud

Rime Hulk

Compendium - Sources->Dungeons & Dragons->Bigby Presents: Glory of the Giants

ancestors, rime hulks are roughly formed masses of frost and ice. Their vaguely giant-shaped physical forms are unstable, constantly breaking apart and reforming as clouds of frost billow off them. As a rime

hulk moves, it leaves a trail of ice that can freeze enemies in place. When it dies, a rime hulk explodes in a burst of frost. Linda Lithen Rime Hulk Large Elemental, Typically Neutral Evil

Madness of Zuggtmoy

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

things are true even in the face of overwhelming evidence to the contrary.” 61–80 “My mind is slipping away, and my intelligence seems to wax and wane.” 81–00 “I am constantly scratching at unseen fungal

(2d8) poison damage. Infestation Spores (3/Day). Zuggtmoy releases spores that burst out in a cloud that fills a 20-foot-radius sphere centered on her, and it lingers for 1 minute. Any flesh-and-blood

Eldritch Staff

Compendium - Sources->Dungeons & Dragons->The Wild Beyond the Witchlight

expended charges daily at dawn. If you expend the last charge, roll a d20. On a 1, the staff is destroyed in an otherwise harmless burst of eldritch energy. Eldritch Attack. When you hit with a melee

, you can use your reaction to expend 3 of the staff’s charges, whereupon you turn invisible and teleport yourself, along with any equipment you are wearing or carrying, up to 60 feet to an unoccupied

Pride

Compendium - Sources->Dungeons & Dragons->Bigby Presents: Glory of the Giants

“armor shaker”). 4 The giant’s first reaction to smaller creatures—even when threatened or presented with a terrible problem—is laughter. 5 The giant constantly demeans or patronizes smaller creatures

Dragons' Minions

Compendium - Sources->Dungeons & Dragons->Fizban's Treasury of Dragons

one or more of these traits to the minion’s stat block. Explosive Minion. When the minion dies, it releases a burst of energy in a 5-foot-radius sphere. Each creature in that area takes 1d8 damage of

5 feet of its master, the minion can use its reaction to make the attack hit itself instead. Telepathic Minion. The minion and its master can communicate telepathically with each other, as long as they are on the same plane of existence.

Coral

Compendium - Sources->Dungeons & Dragons->Misplaced Monsters: Volume One

it immediately uses its reaction to eat one of the cookies. Any leftover cookies are delicious but confer no benefits. 3–4: Sparkle Burst. The bubbles transform into glitter that swirls around the

slams her tail down, unleashing a burst of magical force toward one creature she can see within 60 feet of her. The target must make a DC 16 Dexterity saving throw. On a failed save, the target takes 22

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