make some with only actions for for looms

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

Confusion

Spells Player’s Handbook

Each creature in a 10-foot-radius Sphere centered on a point you choose within range must succeed on a Wisdom saving throw, or that target can’t take Bonus Actions or Reactions and must roll

uses all its movement to move. Roll 1d4 for the direction: 1, north; 2, east; 3, south; or 4, west. 2–6 The target doesn’t move or take actions. 7–8 The target doesn

Detect Thoughts

Spells Player’s Handbook

, emotions, and something that looms large in its mind (such as a worry, love, or hate). On a successful save, the spell ends. Either way, the target knows that you are probing into its mind, and until

you shift your attention away from the target’s mind, the target can take an action on its turn to make an Intelligence (Arcana) check against your spell save DC, ending the spell on a success.

Ancient White Dragon

Monsters Monster Manual

Ice Walk. The dragon can move across and climb icy surfaces without needing to make an ability check. Additionally, Difficult Terrain composed of ice or snow doesn’t cost it extra movement

", "rollDamageType":"Cold"} Cold damage. Success: Half damage.Legendary Action Uses: 3 (4 in Lair). Immediately after another creature’s turn, the dragon can expend a use to take one of the following actions

Colossus

Monsters Monster Manual

carrying.Legendary Action Uses: 3. Immediately after another creature’s turn, the colossus can expend a use to take one of the following actions. The colossus regains all expended uses at the start of each of

its turns. Smite. The colossus makes one Radiant Ray attack. Stomp. The colossus moves up to half its Speed without provoking Opportunity Attack;Opportunity Attacks, and it can make one Slam attack at any point during that move.Poison, PsychicNecrotic, Radiant

Adult White Dragon

Monsters Monster Manual

Ice Walk. The dragon can move across and climb icy surfaces without needing to make an ability check. Additionally, Difficult Terrain composed of ice or snow doesn’t cost it extra movement

", "rollDamageType":"Cold"} Cold damage. Success: Half damage.Legendary Action Uses: 3 (4 in Lair). Immediately after another creature’s turn, the dragon can expend a use to take one of the following actions

Giant Insect

Spells Player’s Handbook

make an ability check. Actions Multiattack. The insect makes a number of attacks equal to half this spell’s level (round down). Poison Jab. Melee Attack Roll: Bonus equals your spell attack

ft. Hit: 1d10 + 3 plus the spell’s level Bludgeoning damage, and the target’s Speed is reduced to 0 until the start of the insect’s next turn. Bonus Actions Venomous Spew (Centipede

Vampire

Monsters Monster Manual

regains 1 Hit Point after spending 1 hour there. Spider Climb. The vampire can climb difficult surfaces, including along ceilings, without needing to make an ability check. Vampire Weakness. The

). Immediately after another creature’s turn, the vampire can expend a use to take one of the following actions. The vampire regains all expended uses at the start of each of its turns. Beguile

True Polymorph

Spells Player’s Handbook

duration, the spell lasts until dispelled. An unwilling creature can make a Wisdom saving throw, and if it succeeds, it isn’t affected by this spell. Creature into Creature. If you turn a

Points of the new form. These Temporary Hit Points vanish if any remain when the spell ends. The target is limited in the actions it can perform by the anatomy of its new form, and it can’t speak

Summon Construct

Spells Player’s Handbook

Throw: DC equals your spell save DC, the target. Failure: Until the start of its next turn, the target can’t make Opportunity Attack;Opportunity Attacks, and its Speed is halved. Actions

Animate Objects

Spells Player’s Handbook

. Each creature you make with this spell is an ally to you and your allies. In combat, it shares your Initiative count and takes its turn immediately after yours. Until the spell ends, you can take a

Proficiency Bonus) Actions Slam. Melee Attack Roll: Bonus equals your spell attack modifier, reach 5 ft. Hit: Force damage equal to 1d4 + 3 (Medium or smaller), 2d6 + 3 + your spellcasting ability modifier (Large), or 2d12 + 3 + your spellcasting ability modifier (Huge).

Arch-hag

Monsters Monster Manual

another creature’s turn, the hag can expend a use to take one of the following actions. The hag regains all expended uses at the start of each of its turns. Hag’s Swipe. The hag makes one

(excluding the hag and its allies) within 1 mile of the lair subtract 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Lapsus Linguae"} from any ability check they make when they take the

Elemental Cataclysm

Monsters Monster Manual

target has the Restrained condition, has Total Cover, and is suffocating. As an action, a buried creature or another creature within 5 feet of it can make a DC 18 Strength (Athletics) check. On a

spellcasting ability.Legendary Action Uses: 3. Immediately after another creature’s turn, the cataclysm can expend a use to take one of the following actions. The cataclysm regains all expended

Figurine of Wondrous Power

Magic Items Dungeon Master’s Guide

you on your Initiative count. If you issue no commands, the creature defends itself but takes no other actions. The creature exists for a duration specific to each figurine. At the end of the

duration, the creature reverts to its figurine form. It reverts to a figurine early if its creature form drops to 0 Hit Points or if you take a Magic action while touching the creature to make it revert to

Vampire Infernalist

Monsters Astarion's Book of Hungers

Action Uses: 3 (4 in Lair). Immediately after another creature’s turn, the vampire can expend a use to take one of the following actions. The vampire regains all expended uses at the start of each

sap the body and mind. Creatures (excluding the vampire and its allies) that finish a Short or Long Rest while within 1 mile of the lair make a DC 15 Wisdom saving throw. On a failed save, a creature

Karas Chembryl

Monsters Forgotten Realms: Adventures in Faerûn

Evasion. If Karas is subjected to an effect that allows her to make a Dexterity saving throw to take only half damage, Karas instead takes no damage if she succeeds on the save and only half damage

another creature’s turn, Karas can expend a use to take one of the following actions. Karas regains all expended uses at the start of each of her turns. Harrow. Wisdom Saving Throw: DC 15, one

Hybrid Spy

Monsters Guildmasters’ Guide to Ravnica

Chameleon Skin. The hybrid has advantage on Dexterity (Stealth) checks made to hide. Spider Climb. The hybrid can climb difficult surfaces, including upside down on ceilings, without needing to make

tension within the Simic Combine as the threat of interguild conflict looms. Believing that the Simic must be prepared to fight for their lives when that conflict comes to a head, biomancers have created

Rak Tulkhesh

Monsters Eberron: Rising from the Last War

, and Intelligence, Wisdom, and Charisma scores, as well as this action. His statistics and capabilities are otherwise replaced by those of the new form, except any class features or legendary actions

of that form.Rak Tulkhesh can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. Rak

Demilich Legacy

Monsters Monster Manual (2014)

Drain (Costs 2 Actions). Each creature within 30 feet of the demilich must make a DC 15 Constitution saving throw. On a failed save, the creature’s hit point maximum is magically reduced by 10 (3d6

Avoidance. If the demilich is subjected to an effect that allows it to make a saving throw to take only half damage, it instead takes no damage if it succeeds on the saving throw, and only half

Vedalken

Species Guildmasters’ Guide to Ravnica

skilled at not displaying it. Cool rationality guides their actions, they make and follow careful plans, and they are patient enough to do nothing when the ideal outcome relies on such inaction

Adult Bronze Dragon Legacy

Monsters Basic Rules (2014)

must make a DC 19 Dexterity saving throw, taking 66 (12d10);{"diceNotation":"12d10","rollType":"damage","rollAction":"Lightning Breath","rollDamageType":"lightning"} lightning damage on a failed save

alignment, hit points, Hit Dice, ability to speak, proficiencies, Legendary Resistance, lair actions, and Intelligence, Wisdom, and Charisma scores, as well as this action. Its statistics and capabilities

Adult Blue Dragon Legacy

Monsters Basic Rules (2014)

that line must make a DC 19 Dexterity saving throw, taking 66 (12d10);{"diceNotation":"12d10","rollType":"damage","rollAction":"Lightning Breath","rollDamageType":"lightning"} lightning damage on a

failed save, or half as much damage on a successful one.The dragon can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end

Ancient Silver Dragon Legacy

Monsters Basic Rules (2014)

uses one of the following breath weapons. Cold Breath. The dragon exhales an icy blast in a 90-foot cone. Each creature in that area must make a DC 24 Constitution saving throw, taking 67 (15d8

, hit points, Hit Dice, ability to speak, proficiencies, Legendary Resistance, lair actions, and Intelligence, Wisdom, and Charisma scores, as well as this action. Its statistics and capabilities are

Ancient Gold Dragon Legacy

Monsters Basic Rules (2014)

":"recharge","rollAction":"Breath Weapons"}. The dragon uses one of the following breath weapons. Fire Breath. The dragon exhales fire in a 90-foot cone. Each creature in that area must make a DC 24

absorbed or borne by the new form (the dragon's choice). In a new form, the dragon retains its alignment, hit points, Hit Dice, ability to speak, proficiencies, Legendary Resistance, lair actions, and

Tiamat

Monsters Tyranny of Dragons

). Black Dragon Head: Acid Breath (Costs 2 Actions). Tiamat exhales acid in a 120-foot line that is 10 feet wide. Each creature in that line must make a DC 27 Dexterity saving throw, taking 67 (15d8

: Lightning Breath (Costs 2 Actions). Tiamat exhales lightning in a 120-foot line that is 10 feet wide. Each creature in that line must make a DC 27 Dexterity saving throw, taking 88 (16d10

Blade of the Medusa

Magic Items Lost Laboratory of Kwalish

When you attack a creature with this magic weapon and roll a 20 on the attack roll, the creature must make a DC 15 Constitution saving throw in addition to suffering the attack’s normal effects

. On a failed save, the creature is restrained and must make another Constitution saving throw at the end of each of its turns. If it successfully saves against this effect three times, the effect

Ancient Blue Dragon Legacy

Monsters Basic Rules (2014)

in that line must make a DC 23 Dexterity saving throw, taking 88 (16d10);{"diceNotation":"16d10","rollType":"damage","rollAction":"Lightning Breath","rollDamageType":"lightning"} lightning damage on a

failed save, or half as much damage on a successful one.The dragon can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the

Adult Gold Dragon Legacy

Monsters Basic Rules (2014)

","rollAction":"Breath Weapons"}. The dragon uses one of the following breath weapons. Fire Breath. The dragon exhales fire in a 60-foot cone. Each creature in that area must make a DC 21 Dexterity

or borne by the new form (the dragon's choice). In a new form, the dragon retains its alignment, hit points, Hit Dice, ability to speak, proficiencies, Legendary Resistance, lair actions, and

Solar Legacy

Monsters Basic Rules (2014)

unoccupied space it can see. Searing Burst (Costs 2 Actions). The solar emits magical, divine energy. Each creature of its choice in a 10-foot radius must make a DC 23 Dexterity saving throw, taking 14

greatsword to hover magically in an unoccupied space within 5 feet of it. If the solar can see the sword, the solar can mentally command it as a bonus action to fly up to 50 feet and either make one attack

Adult Copper Dragon Legacy

Monsters Basic Rules (2014)

of the following breath weapons. Acid Breath. The dragon exhales acid in an 60-foot line that is 5 feet wide. Each creature in that line must make a DC 18 Dexterity saving throw, taking 54 (12d8

gas in a 60-foot cone. Each creature in that area must succeed on a DC 18 Constitution saving throw. On a failed save, the creature can't use reactions, its speed is halved, and it can't make more

Ancient Bronze Dragon Legacy

Monsters Basic Rules (2014)

must make a DC 23 Dexterity saving throw, taking 88 (16d10);{"diceNotation":"16d10","rollType":"damage","rollAction":"Lightning Breath","rollDamageType":"lightning"} lightning damage on a failed save

alignment, hit points, Hit Dice, ability to speak, proficiencies, Legendary Resistance, lair actions, and Intelligence, Wisdom, and Charisma scores, as well as this action. Its statistics and capabilities

Severin

Monsters Tyranny of Dragons

creature within 5 feet of that point must make a DC 17 Dexterity saving throw, taking 18 (4d8);{"diceNotation":"4d8","rollType":"damage","rollAction":"Scorching Burst","rollDamageType":"fire"} fire

damage on a failed save, or half as much damage on a successful one.If Severin is wearing the Mask of the Dragon Queen, he can take 3 legendary actions, choosing from the options below. Only one

Adult Blue Dracolich Legacy

Monsters Monster Manual (2014)

":"recharge","rollAction":"Lightning Breath"}. The dracolich exhales lightning in a 90-foot line that is 5 feet wide. Each creature in that line must make a DC 20 Dexterity saving throw, taking 66

dracolich can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The dracolich regains

Muiral

Monsters Waterdeep: Dungeon of the Mad Mage

longsword attack that has a reach of 10 feet. Retreating Strike (Costs 3 Actions). Muiral moves up to his speed without provoking opportunity attacks. Before the move, he can make one longsword attack.

":"piercing"} piercing damage. The target must make a DC 16 Constitution saving throw, taking 27 (6d8);{"diceNotation":"6d8","rollType":"damage","rollAction":"Sting","rollDamageType":"poison"} poison

Ancient Brass Dragon Legacy

Monsters Basic Rules (2014)

of the following breath weapons: Fire Breath. The dragon exhales fire in an 90-foot line that is 10 feet wide. Each creature in that line must make a DC 21 Dexterity saving throw, taking 56 (16d6

Dice, ability to speak, proficiencies, Legendary Resistance, lair actions, and Intelligence, Wisdom, and Charisma scores, as well as this action. Its statistics and capabilities are otherwise

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