mechanical starts with only are for for lasts

Harpy

Monsters Monster Manual

", "rollDamageType":"Slashing"} Slashing damage. Luring Song. The harpy sings a magical melody, which lasts until the harpy’s Concentration ends on it. Wisdom Saving Throw: DC 11, each Humanoid and

Giant in a 300-foot Emanation originating from the harpy when the song starts. Failure: The target has the Charmed condition until the song ends and repeats the save at the end of each of its turns. While

Gnoll Demoniac

Monsters Monster Manual

":"1d6", "rollType":"recharge", "rollAction":"Hunger of Yeenoghu"}. The gnoll conjures a 30-foot Cube of magical Darkness originating from a point it can see within 60 feet, which lasts for 1 minute

or until the gnoll’s Concentration ends on it. This area is Difficult Terrain. Dexterity Saving Throw: DC 14, any creature that starts its turn in this area or enters it for the first time on a

Conjure Elemental

Spells Player’s Handbook

), earth (Thunder), fire (Fire), or water (Cold). The spirit lasts for the duration. Whenever a creature you can see enters the spirit’s space or starts its turn within 5 feet of the spirit, you

Elemental Cataclysm

Monsters Monster Manual

: Half damage. Failure or Success: The target starts burning.2: Freezing Waves. Strength Saving Throw: DC 23, each creature in a 90-foot Cone. Failure: 22 (5d8);{"diceNotation":"5d8", "rollType":"damage

fills a 60-foot-radius Sphere centered on a point the cataclysm can see within 150 feet. The cloud lasts for 1 minute or until the cataclysm uses Cataclysmic Event again. Creatures entirely in the

Prismatic Wall

Spells Player’s Handbook

wall into a globe up to 30 feet in diameter centered on a point within range. The wall lasts for the duration. If you position the wall in a space occupied by a creature, the spell ends instantly

harm. If another creature that can see the wall moves within 20 feet of it or starts its turn there, the creature must succeed on a Constitution saving throw or have the Blinded condition for 1 minute

Blade Scout

Monsters Vecna: Eve of Ruin

);{"diceNotation":"1d8+5", "rollType":"damage", "rollAction":"Bolt Launcher", "rollDamageType":"piercing"} piercing damage. Snare Trap (1/Day). The scout deploys a Tiny mechanical trap on a solid surface within

5 feet of itself. The trap is hidden, requiring a successful DC 17 Intelligence (Investigation) check to find. The trap lasts for 1 minute. Whenever an enemy enters a space within 10 feet of the trap

Dretch Legacy

Monsters Basic Rules (2014)

Cloud (1/Day). A 10-foot radius of disgusting green gas extends out from the dretch. The gas spreads around corners, and its area is lightly obscured. It lasts for 1 minute or until a strong wind

disperses it. Any creature that starts its turn in that area must succeed on a DC 11 Constitution saving throw or be poisoned until the start of its next turn. While poisoned in this way, the target

Chasme Legacy

Monsters Monster Manual (2014)

Drone. The chasme produces a horrid droning sound to which demons are immune. Any other creature that starts its turn within 30 feet of the chasme must succeed on a DC 12 Constitution saving throw or

. This reduction to a creature’s hit point maximum lasts until the creature finishes a long rest or until it is affected by a spell like greater restoration.PoisonCold, Fire, Lightning

Boggle

Monsters Mordenkainen Presents: Monsters of the Multiverse

deep and covers the ground in the boggle’s space. The puddle is difficult terrain for all creatures except boggles and lasts for 1 hour. If the oil is slippery, any creature that enters the puddle

’s area or starts its turn there must succeed on a DC 11 Dexterity saving throw or fall prone. If the oil is sticky, any creature that enters the puddle’s area or starts its turn there

Cube of Force Legacy

Magic Items Basic Rules (2014)

This cube is about an inch across. Each face has a distinct marking on it that can be pressed. The cube starts with 36 charges, and it regains 1d20 expended charges daily at dawn. You can use an

charges remaining, nothing happens. Otherwise, a barrier of invisible force springs into existence, forming a cube 15 feet on a side. The barrier is centered on you, moves with you, and lasts for 1

Clay Golem Legacy

Monsters Basic Rules (2014)

Acid Absorption. Whenever the golem is subjected to acid damage, it takes no damage and instead regains a number of hit points equal to the acid damage dealt. Berserk. Whenever the golem starts its

dies if this attack reduces its hit point maximum to 0. The reduction lasts until removed by the greater restoration spell or other magic. Haste (Recharge 5–6);{"diceNotation":"1d6","rollType

Boggle Legacy

Monsters Volo's Guide to Monsters

creatures except boggles and lasts for l hour. If the oil is slippery, any creature that enters the puddle's area or starts its turn there must succeed on a DC 11 Dexterity saving throw or fall prone

next to the destination as well, and anything the boggle puts through the rift (including a portion of its body) emerges at the destination. Only the boggle can use the rift, and it lasts until the end

Ice Troll

Monsters Icewind Dale: Rime of the Frostmaiden

. Any creature that starts its turn within 10 feet of the troll takes 10 (3d6);{"diceNotation":"3d6","rollType":"damage","rollAction":"Cold Aura","rollDamageType":"cold"} cold damage. Keen Smell. The

trait doesn't function at the start of the troll's next turn. The ice troll dies only if it starts its turn with 0 hit points and doesn't regenerate.Multiattack. The troll makes three attacks: one with

Sickening Radiance

Spells Xanathar's Guide to Everything

Dim, greenish light spreads within a 30-foot-radius sphere centered on a point you choose within range. The light spreads around corners, and it lasts until the spell ends. When a creature moves

into the spell's area for the first time on a turn or starts its turn there, that creature must succeed on a Constitution saving throw or take 4d10 radiant damage, suffer one level of exhaustion, and

Blade Barrier Legacy

Spells Basic Rules (2014)

You create a vertical wall of whirling, razor-sharp blades made of magical energy. The wall appears within range and lasts for the duration. You can make a straight wall up to 100 feet long, 20 feet

. When a creature enters the wall's area for the first time on a turn or starts its turn there, the creature must make a Dexterity saving throw. On a failed save, the creature takes 6d10 slashing damage. On a successful save, the creature takes half as much damage.

Ixitxachitl Cleric

Monsters Out of the Abyss

Regeneration. The ixitxachitl regains 10 hit points at the start of its turn. The ixitxachitl dies only if it starts its turn with 0 hit points. Spellcasting. The ixitxachitl is a 5th-level

an amount equal to the damage taken, and the ixitxachitl regains hit points equal to that amount. The reduction lasts until the target finishes a long rest. The target dies if its hit point maximum is

Living Cloudkill

Monsters Eberron: Rising from the Last War

fog for the first time on a turn or starts its turn there, it must make a DC 16 Constitution saving throw, taking 22 (5d8);{"diceNotation":"5d8","rollType":"damage","rollAction":"Spell Mimicry

ground and through openings. The fog lasts for 10 minutes or until the living spell’s concentration ends (as if concentrating on a spell).PoisonBludgeoning, Piercing, and Slashing from Nonmagical Attacks

Chasme (summoner variant) Legacy

Monsters Monster Manual (2014)

Drone. The chasme produces a horrid droning sound to which demons are immune. Any other creature that starts its turn within 30 feet of the chasme must succeed on a DC 12 Constitution saving throw or

. This reduction to a creature’s hit point maximum lasts until the creature finishes a long rest or until it is affected by a spell like greater restoration. Summon Demon (1/Day). The demon

Vampiric Ixitxachitl

Monsters Out of the Abyss

Regeneration. The ixitxachitl regains 10 hit points at the start of its turn. The ixitxachitl dies only if it starts its turn with 0 hit points.Vampiric Bite. Melee Weapon Attack: +4;{"diceNotation

points equal to that amount. The reduction lasts until the target finishes a long rest. The target dies if its hit point maximum is reduced to 0.Barbed Tail. When a creature provokes an opportunity

Kobold Vampire Spawn

Monsters Icewind Dale: Rime of the Frostmaiden

: Forbiddance. The vampire can’t enter a residence without an invitation from one of the occupants. Harmed by Running Water. The vampire takes 20 acid damage when it starts its turn in running water

radiant damage when it starts its turn in sunlight. While in sunlight, it has disadvantage on attack rolls and ability checks.Bite. Melee Weapon Attack: +6;{"diceNotation":"1d20+6","rollType":"to hit

Medusa Legacy

Monsters Basic Rules (2014)

Petrifying Gaze. When a creature that can see the medusa’s eyes starts its turn within 30 feet of the medusa, the medusa can force it to make a DC 14 Constitution saving throw if the medusa isn

restrained. The restrained creature must repeat the saving throw at the end of its next turn, becoming petrified on a failure or ending the effect on a success. The petrification lasts until the

Forbiddance Legacy

Spells Basic Rules (2014)

, elementals, fey, fiends, and undead. When a chosen creature enters the spell's area for the first time on a turn or starts its turn there, the creature takes 5d10 radiant or necrotic damage (your

overlap with the area of another forbiddance spell. If you cast forbiddance every day for 30 days in the same location, the spell lasts until it is dispelled, and the material components are consumed on the last casting.

Frost Giant Everlasting One Legacy

Monsters Volo's Guide to Monsters

the start of its next turn. The giant dies only if it starts its turn with 0 hit points and doesn't regenerate. Vaprak's Rage (Recharges after a Short or Long Rest). As a bonus action, the giant can

enter a rage at the start of its turn. The rage lasts for 1 minute or until the giant is incapacitated. While raging, the giant gains the following benefits: The giant has advantage on Strength

Cohort of Chaos

Feats Planescape: Adventures in the Multiverse

an attack roll or a saving throw, the magic of chaos flows through you. Roll a d4 and consult the Chaotic Flares table to determine what happens. A flare lasts until the end of your next turn, and a

has advantage on attack rolls and disadvantage on ability checks. 2 Disruption Field. Waves of energy ripple around you. Every creature that starts its turn within 5 feet of you, or that moves

Cloudkill Legacy

Spells Basic Rules (2014)

You create a 20-foot-radius sphere of poisonous, yellow-green fog centered on a point you choose within range. The fog spreads around corners. It lasts for the duration or until strong wind disperses

the fog, ending the spell. Its area is heavily obscured. When a creature enters the spell's area for the first time on a turn or starts its turn there, that creature must make a Constitution saving

Phylaskia

Monsters Mythic Odysseys of Theros

Gatekeeper's Aura. Any creature that starts its turn within 10 feet of the phylaskia must make a DC 15 Wisdom saving throw. On a successful save, the creature is immune to this aura for the next 24

lasts until the target finishes a short or long rest.These armored skeletal spirits guard the borders of the Underworld and its various wards. Sleepless and merciless, they scrutinize all who would

Nightwalker Legacy

Monsters Mordenkainen’s Tome of Foes

Annihilating Aura. Any creature that starts its turn within 30 feet of the nightwalker must succeed on a DC 21 Constitution saving throw or take 14 (4d6);{"diceNotation":"4d6","rollType":"damage

on a DC 21 Constitution saving throw or its hit point maximum is reduced by an amount equal to the necrotic damage taken. This reduction lasts until the target finishes a long rest. Finger of Doom

Reduced-threat Clay Golem

Monsters Tales from the Yawning Portal

Acid Absorption. Whenever the golem is subjected to acid damage, it takes no damage and instead regains a number of hit points equal to the acid damage dealt. Berserk. Whenever the golem starts its

its hit point maximum reduced by an amount equal to the damage taken. The target dies if this attack reduces its hit point maximum to 0. The reduction lasts until removed by the greater restoration

Squirt the Oilcan

Monsters The Wild Beyond the Witchlight

is difficult terrain and lasts for 1 hour. Each creature that enters the puddle’s area or starts its turn there must succeed on a DC 11 Dexterity saving throw or fall prone. Boggles are

Juiblex Legacy

Monsters Out of the Abyss

Foul. Any creature, other than an ooze, that starts its turn within 10 feet of Juiblex must succeed on a DC 21 Constitution saving throw or be poisoned until the start of the creature’s next

its next turn. Juiblex dies only if it starts its turn with 0 hit points and doesn’t regenerate. Spider Climb. Juiblex can climb difficult surfaces, including upside down on ceilings, without

Drelnza

Monsters Quests from the Infinite Staircase

, including upside down on ceilings, without needing to make an ability check. Sunlight Hypersensitivity. Drelnza takes 20 radiant damage when she starts her turn in sunlight. While in sunlight, she has

, and Drelnza regains hit points equal to that amount. The reduction lasts until the target finishes a long rest. The target dies if this effect reduces its hit point maximum to 0. A Humanoid slain in

Soul of the Storm Giant

Feats Bigby Presents: Glory of the Giants

lasts until the start of your next turn or until you are incapacitated. While the aura is active, you have resistance to lightning and thunder damage. In addition, attack rolls against you have

disadvantage, and whenever another creature starts its turn within the aura, you can force the creature to make a Strength saving throw (DC equals 8 + your proficiency bonus + the modifier of the ability

Juiblex

Monsters Mordenkainen Presents: Monsters of the Multiverse

check. The slime lasts for 1 hour or until it is burned away with fire. If the slime is set on fire, it burns away after 1 round. Any creature that starts its turn in the burning slime takes 22 (4d10

Foul. Any creature other than an Ooze that starts its turn within 10 feet of Juiblex must succeed on a DC 21 Constitution saving throw or be poisoned until the start of the creature’s next turn

Vampire Spawn Legacy

Monsters Basic Rules (2014)

its resting place. Sunlight Hypersensitivity. The vampire takes 20 radiant damage when it starts its turn in sunlight. While in sunlight, it has disadvantage on attack rolls and ability

hit points equal to that amount. The reduction lasts until the target finishes a long rest. The target dies if this effect reduces its hit point maximum to 0.A Vampire’s Lair A vampire chooses a

Oinoloth

Monsters Mordenkainen Presents: Monsters of the Multiverse

);{"diceNotation":"1d6", "rollType":"recharge", "rollAction":"Bringer of Plagues"}. The oinoloth blights the area in a 30-foot-radius sphere centered on itself. The blight lasts for 24 hours. While the area is

blighted, all normal plants there wither and die. Furthermore, when a creature moves into the blighted area or starts its turn there, that creature must make a DC 16 Constitution saving throw. On a

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