make some with only actions for for less

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

Polymorph

Spells Player’s Handbook

form can be any Beast you choose that has a Challenge Rating equal to or less than the target’s (or the target’s level if it doesn’t have a Challenge Rating). The target’s game

. The target is limited in the actions it can perform by the anatomy of its new form, and it can’t speak or cast spells. The target’s gear melds into the new form. The creature can’t use or otherwise benefit from any of that equipment.

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

creature into another kind of creature, the new form can be any kind you choose that has a Challenge Rating equal to or less than the target’s Challenge Rating or level. The target’s game

Dispel Magic

Spells Player’s Handbook

Choose one creature, object, or magical effect within range. Any ongoing spell of level 3 or lower on the target ends. For each ongoing spell of level 4 or higher on the target, make an ability check

using your spellcasting ability (DC 10 plus that spell’s level). On a successful check, the spell ends. Using a Higher-Level Spell Slot. You automatically end a spell on the target if the spell’s level is equal to or less than the level of the spell slot you use.

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

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

Enlarge/Reduce

Spells Player’s Handbook

unwilling creature, it can make a Constitution saving throw. On a successful save, the spell has no effect. Everything that a targeted creature is wearing and carrying changes size with it. Any item

saving throws. The target’s attacks with its reduced weapons or Unarmed Strikes deal 1d4 less damage on a hit (this can’t reduce the damage below 1).

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

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

Deck of Many Things

Magic Items Dungeon Master’s Guide

until they or someone else reveals it. Nothing less than a Wish spell or divine intervention can end the NPC’s hostility toward you. Ruin. All forms of wealth that you carry or own, other than

Movement. The avatar can move through other creatures and objects as if they were Difficult Terrain. It takes 5 (1d10) Force damage if it ends its turn inside an object. Actions Multiattack. The

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

Manshoon

Monsters Forgotten Realms: Adventures in Faerûn

. That Manshoon is dead, and the current Manshoon is one of the original’s many clones. Being a magical copy rather than an original doesn’t make Manshoon any less of a threat, as he’s

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

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

. Reasoning toward Perfection Their curious intellects and rational minds incline vedalken toward membership in the Azorius Senate, the Simic Combine, and (less often) the Izzet League. Whatever their guild

Deva Legacy

Monsters Basic Rules (2014)

"} hit points and is freed from any curse, disease, poison, blindness, or deafness. Change Shape. The deva magically polymorphs into a humanoid or beast that has a challenge rating equal to or less than

capabilities (except class features, legendary actions, and lair actions) that the new form has but that it lacks.Radiant; Bludgeoning, Piercing, and Slashing from Nonmagical Attacks

Couatl Legacy

Monsters Basic Rules (2014)

equal to or less than its own, or back into its true form. It reverts to its true form if it dies. Any equipment it is wearing or carrying is absorbed or borne by the new form (the couatl's choice). In a

new form, the couatl retains its game statistics and ability to speak, but its AC, movement modes, Strength, Dexterity, and other actions are replaced by those of the new form, and it gains any

Harengon Sniper

Monsters The Wild Beyond the Witchlight

, ready to pick off targets from a safe distance. These snipers are so adept with their crossbows that their targets gain no benefit from less than total cover against ranged attacks the harengons make

Crossbow. Ranged Weapon Attack: +5;{"diceNotation":"1d20+5", "rollType":"to hit", "rollAction":"Light Crossbow"} to hit (the target gains no benefit from less than total cover), range 320 ft., one

Cosmic Horror

Monsters Spelljammer: Adventures in Space

whispers in a 60-foot-radius sphere centered on itself. Each creature in the sphere that isn’t an Aberration must make a DC 21 Wisdom saving throw, taking 33 (6d10);{"diceNotation":"6d10","rollType

":"damage","rollAction":"Psychic Whispers","rollDamageType":"psychic"} psychic damage on a failed save, or half as much damage on a successful one.The horror can take 3 legendary actions, choosing from

Archdruid Legacy

Monsters Volo's Guide to Monsters

with a challenge rating of 6 or less, and can remain in this form for up to 9 hours. The archdruid can choose whether its equipment falls to the ground, melds with its new form, or is worn by the new

game statistics and ability to speak, but its AC, movement modes, Strength, and Dexterity are replaced by those of the new form, and it gains any special senses, proficiencies, traits, actions, and

Counterspell Legacy

Spells Basic Rules (2014)

level or higher, make an ability check using your spellcasting ability. The DC equals 10 + the spell's level. On a success, the creature's spell fails and has no effect. At Higher Levels. When you cast

this spell using a spell slot of 4th level or higher, the interrupted spell has no effect if its level is less than or equal to the level of the spell slot you used.

Dispel Magic Legacy

Spells Basic Rules (2014)

Choose one creature, object, or magical effect within range. Any spell of 3rd level or lower on the target ends. For each spell of 4th level or higher on the target, make an ability check using your

automatically end the effects of a spell on the target if the spell's level is equal to or less than the level of the spell slot you used.

Hideous Laughter Legacy

Spells Basic Rules (2014)

throw or fall prone, becoming incapacitated and unable to stand up for the duration. A creature with an Intelligence score of 4 or less isn't affected. At the end of each of its turns, and each time

it takes damage, the target can make another Wisdom saving throw. The target has advantage on the saving throw if it's triggered by damage. On a success, the spell ends.

Nintra Siotta

Monsters Candlekeep Mysteries

feet of her and creates a 20-foot-radius sphere of swirling glass shards centered on that point. Each creature in the sphere must make a DC 20 Dexterity saving throw, taking 28 (8d6);{"diceNotation":"8d6

, the shards deal no damage to her.Nintra 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

Ancient Deep Crow

Monsters Acquisitions Incorporated

":"slashing"} slashing damage. Shadow Caw. The ancient deep crow releases an ear-splitting caw. Each creature within 60 feet of the crow and able to hear it must make a DC 17 Constitution saving throw

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 ancient deep crow regains spent legendary actions at the

Portentia Dran

Monsters Acquisitions Incorporated

","rollType":"damage","rollAction":"Shortsword","rollDamageType":"slashing"} slashing damage. Change Shape. Portentia magically polymorphs into a humanoid or beast that has a challenge rating equal to or less

actions, and lair actions) that the new form has but that she lacks.Now the owner and driving force behind Dran Enterprises — perhaps Acquisitions Incorporated's most notable rival in the adventuring-for

Wyllow

Monsters Waterdeep: Dungeon of the Mad Mage

. Change Shape (2/Day). Wyllow magically polymorphs into a beast or elemental with a challenge rating of 6 or less, and can remain in this form for up to 9 hours. Wyllow can choose whether her equipment

senses, proficiencies, traits, actions, and reactions (except class features, legendary actions, and lair actions) that the new form has but that she lacks. She can cast her spells with verbal or

Ring of Shooting Stars Legacy

Magic Items Basic Rules (2014)

charges as an action to create one to four 3-foot-diameter spheres of lightning. The more spheres you create, the less powerful each sphere is individually. Each sphere appears in an unoccupied space

disappears. That creature must make a DC 15 Dexterity saving throw. On a failed save, the creature takes lightning damage based on the number of spheres you created. Spheres Lightning Damage

Auril (Third Form)

Monsters Icewind Dale: Rime of the Frostmaiden

unfeeling entity. Have Auril speak only when necessary. The less she talks, the less risk you have of unintentionally demystifying her in the eyes of your players. Let her actions, not her words

until her concentration is broken (as if concentrating on a spell).Auril can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at

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