before barrier diffusing course rounds

Lorehold Professor of Order

Monsters Strixhaven: A Curriculum of Chaos

Repelling Burst attacks. It can also use Force Barrier, if available. Repelling Burst. Melee Spell Attack: +7;{"diceNotation":"1d20+7", "rollType":"to hit", "rollAction":"Repelling Burst"} to hit

creature, it must succeed on a DC 15 Strength saving throw or be pushed up to 10 feet directly away from the professor and become restrained until the start of professor’s next turn. Force Barrier

Merrenoloth

Monsters Mordenkainen Presents: Monsters of the Multiverse

waterThe grim captains of the ferries on the River Styx, merrenoloths can navigate safely through the worst storms and always stay on course. Wielding fiery oars, merrenoloths strike fear into anyone

take the same lair action two rounds in a row: Gale. The air within 60 feet of the vessel is filled with wind. Until initiative count 20 on the next round, that area is difficult terrain, and when a

Merrenoloth Legacy

Monsters Mordenkainen’s Tome of Foes

same effect two rounds in a row: The ship regains 22 (4d10);{"diceNotation":"4d10","rollType":"healing","rollAction":"Lair Action"} hit points. A strong wind propels the ship, increasing its speed by

vessel with powerful magic that creates one or more of the following effects: The ship doesn't sink even if its hull is breached. The ship always stays on course to the destination the merrenoloth

Zariel Legacy

Monsters Mordenkainen’s Tome of Foes

), detect evil and good, fireball, invisibility (self only), wall of fire 3/day each: blade barrier, dispel evil and good, finger of death Legendary Resistance (3/Day). If Zariel fails a saving throw

the following effects; she can’t use the same effect two rounds in a row: Zariel casts major image four times at its lowest level, targeting different areas with the spell. Zariel prefers to

Zariel

Monsters Mordenkainen Presents: Monsters of the Multiverse

evil and good, fireball, invisibility (self only), major image, wall of fire 3/day each: blade barrier, dispel evil and good, finger of death Teleport. Zariel teleports, along with any equipment

’t take the same lair action two rounds in a row: Fireball. Zariel casts the fireball spell. Infernal Illusions. Zariel casts the major image spell four times, targeting different areas with it

Adult Red Dragon Legacy

Monsters Basic Rules (2014)

initiative count 20 (losing initiative ties), the dragon takes a lair action to cause one of the following effects; the dragon can’t use the same effect two rounds in a row: Magma erupts from a

lair form portals to the Elemental Plane of Fire, allowing creatures of elemental fire into the world to dwell nearby. If the dragon dies, these effects fade over the course of 1d10;{"diceNotation":"1d10","rollAction":"Days","rollType":"roll"} days.Fire

Drow Mother of Rebellion

Monsters Mordenkainen Presents: Monsters of the Multiverse

and using Charisma as the spellcasting ability (spell save DC 20): At will: command, dancing lights, detect magic, thaumaturgy 2/day each: banishment, blade barrier, cure wounds, hold person, plane

action two rounds in a row: Perceive Interlopers. The drow projects her mind throughout her lair, marking any potential threats against her or her retinue. Until initiative count 20 of the next round

Ancient Red Dragon Legacy

Monsters Basic Rules (2014)

Actions On initiative count 20 (losing initiative ties), the dragon takes a lair action to cause one of the following effects; the dragon can’t use the same effect two rounds in a row: Magma

’s lair form portals to the Elemental Plane of Fire, allowing creatures of elemental fire into the world to dwell nearby. If the dragon dies, these effects fade over the course of 1d10;{"diceNotation":"1d10","rollAction":"Days","rollType":"roll"} days.Fire

Demilich Legacy

Monsters Monster Manual (2014)

","rollAction":"Take Lair Action"}. On a result of 11 or higher, the demilich takes a lair action to cause one of the following effects. It can’t use the same effect two rounds in a row. The tomb

long as they aren’t used to leave or enter the tomb’s area. If the demilich is destroyed, these effects fade over the course of 10 days.Necrotic, Poison, Psychic; Bludgeoning, Piercing, and Slashing from Nonmagical AttacksBludgeoning, Piercing, and Slashing from Magic Weapons

Adult Red Dracolich Legacy

Monsters Monster Manual (2014)

one of the following effects; the dracolich can’t use the same effect two rounds in a row: Magma erupts from a point on the ground the dracolich can see within 120 feet of it, creating a 20

of the dracolich's lair form portals to the Elemental Plane of Fire, allowing creatures of elemental fire into the world to dwell nearby. If the dracolich dies, these effects fade over the course of 1d10;{"diceNotation":"1d10","rollType":"roll"} days.Fire, PoisonNecrotic

Beholder Legacy

Monsters Monster Manual (2014)

rounds in a row. Regional Effects A region containing a beholder’s lair is warped by the creature’s unnatural presence, which creates one or more of the following effects: Creatures

natural surfaces and to nonmagical objects that aren’t on anyone’s person. If the beholder dies, these effects fade over the course of 1d10;{"diceNotation":"1d10","rollAction":"Days","rollType":"roll"} days.

Adult White Dragon Legacy

Monsters Basic Rules (2014)

breath. Lair Actions On initiative count 20 (losing initiative ties), the dragon takes a lair action to cause one of the following effects; the dragon can’t use the same effect two rounds in

through a wall, it can do so without slowing down. The portion of the wall the dragon moves through is destroyed, however. If the dragon dies, the fog and precipitation fade within 1 day. The ice walls melt over the course of 1d10;{"diceNotation":"1d10","rollType":"roll"} days.Cold

Death Tyrant Legacy

Monsters Monster Manual (2014)

. The eye then closes and disappears. The death tyrant can’t repeat an effect until all three have been used, and it can’t use the same effect on consecutive rounds. Regional Effects A

’s lair, roll a d20 for that creature. On a roll of 10 or lower, the creature is subjected to one random eye ray of the tyrant. If the death tyrant dies, these effects fade over the course of 1d10;{"diceNotation":"1d10","rollAction":"Days","rollType":"roll"} days.Poison

Ancient White Dragon Legacy

Monsters Basic Rules (2014)

freezing breath. Lair Actions On initiative count 20 (losing initiative ties), the dragon takes a lair action to cause one of the following effects; the dragon can’t use the same effect two rounds in

through a wall, it can do so without slowing down. The portion of the wall the dragon moves through is destroyed, however. If the dragon dies, the fog and precipitation fade within 1 day. The ice walls melt over the course of 1d10;{"diceNotation":"1d10","rollType":"roll"} days.Cold

Hierophant Medusa

Monsters The Book of Many Things

2/day: Mass Cure Wounds (cast at 8th level) 1/day each: Blade Barrier, Divination, Greater RestorationThe medusa can take 3 legendary actions, choosing from the options below. It can take only one

; the medusa can’t take the same lair action two rounds in a row: Petrifying Wave. Up to three creatures the medusa can see within the lair are partially turned to stone. Each target must make a

Geryon (Summoner Variant) Legacy

Monsters Mordenkainen’s Tome of Foes

initiative ties), Geryon can take a lair action to cause one of the following effects; he can't use the same effect two rounds in a row: Geryon causes a blast of cold to burst from the ground at a point

must succeed on a DC 21 Wisdom saving throw or derive no benefit from the rest. If Geryon dies, these effects fade over the course of 1d10;{"diceNotation":"1d10","rollType":"roll"} days.Cold, Fire, PoisonBludgeoning, Piercing, and Slashing from Nonmagical Attacks that aren't Silvered

Adult Time Dragon

Monsters Planescape: Adventures in the Multiverse

lair actions; the ancient or adult dragon can’t take the same lair action two rounds in a row: Temporal Fling. The dragon attempts to fling a creature it can see within 60 feet of itself forward

(your choice). Timelessness. Beasts, Humanoids, and Plants within 3 miles of the lair age only 1 year for every 10 years that pass. If the dragon dies, these effects fade over the course of 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Days"} days.

Veiled Presence

Monsters The Book of Many Things

) Lair Actions On initiative count 20 (losing initiative ties) while in its lair, the villain can take one of the following lair actions; the villain can’t take the same lair action two rounds in a

members of the villain’s organization deal poison damage while within 3 miles of the lair, they ignore the target’s resistance to poison damage. If the villain dies, these effects fade over the course of 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Days"} days.Necrotic, Radiant

Froghemoth Elder

Monsters Quests from the Infinite Staircase

the following lair actions; the froghemoth can’t take the same lair action two rounds in a row: Croak. The froghemoth lets out an ear-splitting croak. Each creature within 30 feet of it must

. Wildlife encountered near the lair often sport mutations, such as extra limbs or eyes, glowing secretions, or vestigial tentacles. If the froghemoth elder dies, these effects fade over the course of 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Regional Effect Fade Time"} days.Fire, Lightning

Ambitious Assassin

Monsters The Book of Many Things

; the villain can’t take the same lair action two rounds in a row: Distraction. A shrill sound fills the lair. Creatures that can hear it must succeed on a DC 15 Constitution saving throw or

to poison damage. If the villain dies, these effects fade over the course of 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Days"} days.

Demogorgon

Monsters Mordenkainen Presents: Monsters of the Multiverse

rounds in a row: Darkness. Demogorgon casts the darkness spell four times, targeting different areas with the spell. Demogorgon doesn’t need to concentrate on the spells, which end on

;poisonous snakes and other venomous Beasts. If Demogorgon dies, these effects fade over the course of 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Days"} days. Cultists of Demogorgon

Riverine

Monsters Journeys through the Radiant Citadel

). Lair Actions On initiative count 20 (losing initiative ties), the riverine can take one of the following lair actions; the riverine can’t take the same lair action two rounds in a row

, the flora and fauna return to normal levels, and its river dries out over the course of 1d10;{"diceNotation":"1d10","rollType":"roll","rollAction":"Regional Effect Fade Days"} days. All other effects

Otherworldly Corrupter

Monsters The Book of Many Things

initiative ties) while in its lair, the villain can take one of the following lair actions; the villain can’t take the same lair action two rounds in a row: Distraction. A shrill sound fills the lair

damage while within 3 miles of the lair, they ignore the target’s resistance to poison damage. If the villain dies, these effects fade over the course of 1d10;{"diceNotation":"1d10", "rollType

Lorthuun

Monsters Out of the Abyss

disappears. The beholder can't repeat an effect until they have all been used, and it can't use the same effect two rounds in a row. Regional Effects A region containing a beholder's lair is warped by

before, harmless slime might coat a statue, and so on. These effects apply only to natural surfaces and to nonmagical objects that aren't on anyone's person. If the beholder dies, these effects fade over the course of 1d10;{"diceNotation":"1d10","rollType":"roll"} days.

Geryon Legacy

Monsters Mordenkainen’s Tome of Foes

initiative count 20 (losing initiative ties), Geryon can take a lair action to cause one of the following effects; he can't use the same effect two rounds in a row: Geryon causes a blast of cold to burst

. If Geryon dies, these effects fade over the course of 1d10;{"diceNotation":"1d10","rollType":"roll"} days. VARIANT: SOUND THE HORN Geryon can have an action that allows him to summon enslaved

Enchanting Infiltrator

Monsters The Book of Many Things

lair actions; the villain can’t take the same lair action two rounds in a row: Distraction. A shrill sound fills the lair. Creatures that can hear it must succeed on a DC 15 Constitution saving

resistance to poison damage. If the villain dies, these effects fade over the course of 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Days"} days.

Drow Matron Mother

Monsters Mordenkainen Presents: Monsters of the Multiverse

and using Charisma as the spellcasting ability (spell save DC 20): At will: command, dancing lights, detect magic, thaumaturgy 2/day each: banishment, blade barrier, cure wounds, hold person, plane

can take one of the following lair actions when in her lair; she can’t take the same lair action two rounds in a row: Perceive Interlopers. The drow projects her mind throughout her lair, marking

Demilich (Variant) Legacy

Monsters Monster Manual (2014)

Action"}. On a result of 11 or higher, the demilich takes a lair action to cause one of the following effects. It can’t use the same effect two rounds in a row. The tomb trembles violently for

aren’t used to leave or enter the tomb’s area. If the demilich is destroyed, these effects fade over the course of 10 days.Necrotic, Poison, Psychic; Bludgeoning, Piercing, and Slashing from Nonmagical AttacksBludgeoning, Piercing, and Slashing from Magic Weapons

Zuggtmoy Legacy

Monsters Out of the Abyss

), Zuggtmoy can take a lair action to cause one of the following effects; she can’t use the same effect two rounds in a row. Zuggtmoy causes four gas spore;gas spores or violet fungus;violet fungi

that succeeds on this saving throw can’t be affected by this regional effect again for 24 hours. If Zuggtmoy dies, these effects fade over the course of 1d10;{"diceNotation":"1d10","rollType

Fraz-Urb'luu

Monsters Mordenkainen Presents: Monsters of the Multiverse

’t use the same effect two rounds in a row: Conjure Walls and Doors. Fraz-Urb’luu causes up to five doors within the lair to become walls and an equal number of doors to appear on walls where

navigation in the area exceedingly difficult. If Fraz-Urb’luu dies, these effects fade over the course of 1d10;{"diceNotation":"1d10","rollType":"roll"} days. Cultists of Fraz-Urb’luu Fraz

Ancient Time Dragon

Monsters Planescape: Adventures in the Multiverse

dragon can take one of the following lair actions; the ancient or adult dragon can’t take the same lair action two rounds in a row: Temporal Fling. The dragon attempts to fling a creature it can see

area take 10 minutes or 2 hours (your choice). Timelessness. Beasts, Humanoids, and Plants within 3 miles of the lair age only 1 year for every 10 years that pass. If the dragon dies, these effects fade over the course of 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Days"} days.

Demogorgon Legacy

Monsters Out of the Abyss

following effects; Demogorgon can’t use the same effect two rounds in a row: Demogorgon creates an illusory duplicate of himself, which appears in his own space and lasts until initiative count 20

, these effects fade over the course of 1d10;{"diceNotation":"1d10","rollType":"roll"} days. Madness of Demogorgon If a creature goes mad in Demogorgon’s lair or within line of sight of the

Fraz-Urb'luu Legacy

Monsters Out of the Abyss

’t use the same effect two rounds in a row: Fraz-Urb’luu causes up to 5 doors within the lair to become walls, and an equal number of doors to appear on walls where there previously were

’luu dies, these effects fade over the course of 1d10;{"diceNotation":"1d10","rollType":"roll"} days. Madness of Fraz-Urb’luu If a creature goes mad in Fraz-Urb’luu’s lair or

Graz'zt Legacy

Monsters Out of the Abyss

initiative count 20 (losing initiative ties), Graz’zt can take a lair action to cause one of the following effects; he can’t use the same effect two rounds in a row: Graz’zt casts

hours. If Graz’zt dies, these effects fade over the course of 1d10;{"diceNotation":"1d10","rollType":"roll"} days. Madness of Graz’zt If a creature goes mad in Graz’zt’s

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

traveler somewhere in Stygia. If Geryon dies, these effects fade over the course of 1d10;{"diceNotation":"1d10","rollType":"roll"} days. Cultists of Geryon Geryon grants his cultists special

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