before barrier device cause rounds

Robot Controller

Equipment

the device gives the device 3 charges. As an action while holding this device, you can expend 1 of its charges to cause one of the following effects: Control. One Construct of your choice within 60

This small handheld device features a glass pane with a glowing display that responds to your touch. The controller is powered by an energy cell stored in the device. Placing a full energy cell in

Ythryn Mythallar

Magic Items Icewind Dale: Rime of the Frostmaiden

of existence as the Ythryn mythallar, you can use an action to cause it to fly in any direction you choose at a speed of 30 feet. All matter within 500 feet of the device moves with it. The Ythryn

hold. The largest mythallars are 150 feet in diameter. The Ythryn mythallar is a relatively small device—a mere 50 feet in diameter. To attune to this mythallar, a creature must finish a short

Mighty Servant of Leuk-o

Magic Items Tasha’s Cauldron of Everything

conjecture than fact, often referring to otherworldly beings, the mysterious Barrier Peaks in Oerth, and the supposedly related device known as the Machine of Lum the Mad. The best details on the device

’s origins and operation can be found in the Mind of Metal, a tome of artificer’s secrets that connects the device to the traditions of the lost Olman people, and which was written by Lum the

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

of all kinds crawl over the structure, ensuring that no intruders breach their defenses. Lair Actions. On initiative count 20 (losing initiative ties), Zariel can take a lair action to cause one of

Merrenoloth Legacy

Monsters Mordenkainen’s Tome of Foes

merrenoloth can invoke its ability to take lair actions. On initiative count 20 (losing initiative ties), the merrenoloth can take one lair action to cause one of the following effects; it can't use the

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

War Oil

Equipment

point, such as the ground or a wall, and on an attack roll against AC 10, cause the War Oil to spill out of the ammunition, creating a circular patch of the viscous substance with a 10-foot radius. War

an open flame or some other source of Fire damage, the oil ignites. The ignited oil burns for two rounds, dealing 2d4 Fire damage to any creature or object who comes in contact with it, and an

Githzerai Anarch Legacy

Monsters Mordenkainen’s Tome of Foes

action to cause one of the following effects; the anarch can’t use the same effect two rounds in a row: The anarch casts the lightning bolt spell (at 5th level), but the anarch can change the

":"roll"} rounds. All formed substance becomes a chaotic churn of energy and matter, unraveling into unformed substance that dissipates 1d6;{"diceNotation":"1d6","rollType":"roll"} rounds later. The

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

Reborn

Species Van Richten’s Guide to Ravenloft

physical state that their minds are ill equipped to deal with. Their memories of events before this interruption are often vague or absent. Occasionally, the most unexpected experiences might cause

perfectly preserved remains. Lamordia. You awoke amid the bizarre experiments of an amoral scientist. They consider you their finest creation or have a task for you to fulfill. Mordent. You emerged from the mysterious device known as the Apparatus, your body a lifeless shell and your past a mystery.

Adult Black Dragon Legacy

Monsters Basic Rules (2014)

infest the lair, which is filled with the stench of death and decay. 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 a row: Pools of water that the dragon can see within 120 feet of it surge outward in a grasping tide. Any creature on the ground within 20

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

Adult Blue Dragon Legacy

Monsters Basic Rules (2014)

wealth of the dead intruders. 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 a row: Part of the ceiling collapses above one creature that the dragon can see within 120 feet of it. The creature must succeed on a DC 15 Dexterity saving throw or take 10

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

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

Ancient Gold Dragon Legacy

Monsters Basic Rules (2014)

ancient ruins. 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

Adult Red Dracolich Legacy

Monsters Monster Manual (2014)

, telling the grim story of its life, the enemies it has slain, and the nations it has conquered. Lair Actions On initiative count 20 (losing initiative ties), the dracolich takes a lair action to cause

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

Adult Gold Dragon Legacy

Monsters Basic Rules (2014)

ruins. 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 a row

Lich Legacy

Monsters Basic Rules (2014)

ties), the lich can take a lair action to cause one of the following magical effects; the lich can’t use the same effect two rounds in a row: The lich rolls a d8;{"diceNotation":"1d8","rollType

Ancient Black Dragon Legacy

Monsters Basic Rules (2014)

the lair, which is filled with the stench of death and decay. 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 a row: Pools of water that the dragon can see within 120 feet of it surge outward in a grasping tide. Any creature on the ground within 20 feet

Ancient Blue Dragon Legacy

Monsters Basic Rules (2014)

the wealth of the dead intruders. 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 a row: Part of the ceiling collapses above one creature that the dragon can see within 120 feet of it. The creature must succeed on a DC 15 Dexterity saving throw or take 10

Beholder Legacy

Monsters Monster Manual (2014)

actions. On initiative count 20 (losing initiative ties), the beholder can take one lair action to cause one of the following effects: A 50-foot square area of ground within 120 feet of the

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

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

Ancient Green 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: Grasping roots and

Death Tyrant Legacy

Monsters Monster Manual (2014)

the ambient magic to take lair actions. On initiative count 20 (losing initiative ties), the death tyrant can take one lair action to cause one of the following effects: An area that is a 50-foot

. 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

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

with advantage.Sometimes deeply devout people, usually either Humanoids or medusas, dedicate themselves to a cause and are transformed by a deity or magic into hierophant medusas—beings with

Adult Green 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: Grasping roots and vines

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

Mummy Lord Legacy

Monsters Basic Rules (2014)

On initiative count 20 (losing initiative ties), the mummy lord takes a lair action to cause one of the following effects; the mummy lord can’t use the same effect two rounds in a row. Each

Scion of Stronmaus

Monsters Bigby Presents: Glory of the Giants

cloud up to 30 feet and cause one of the following effects in a 30-foot-radius, 120-foot-high cylinder directly below it; the scion can’t choose the same effect two rounds in a row: Acid Rain

’s not particularly interested in Humanoids or other little creatures—either in conversing with them or in protecting them from harm it might cause. If the scion is threatened, it unleashes

Fraz-Urb'luu Legacy

Monsters Out of the Abyss

of their holy cause, only to eventually reveal his true nature and claim their souls as his own.Fraz-Urb’luu’s Lair Fraz-Urb’luu’s lair lies within the Abyssal lair known as

(62,000 XP) when he’s encountered in his lair. Lair Actions On initiative count 20 (losing initiative ties), Fraz-Urb’luu can take a lair action to cause one of the following effects; he can

Yeenoghu Legacy

Monsters Out of the Abyss

flail attacks. If an attack hits, he can cause it to create an additional effect of his choice or at random (each effect can be used only once per Multiattack): 1. The attack deals an extra 13 (2d12

of civilization on his layer of the Abyss. Lair Actions On initiative count 20 (losing initiative ties), Yeenoghu can take a lair action to cause one of the following effects; he can’t use the

Imix

Monsters Princes of the Apocalypse

(such as the Weeping Colossus in chapter 5). On initiative count 20 (losing initiative ties), Imix uses his lair action to cause one of the following effects: Any fires in the lair flare up

":"Wildfire","rollDamageType":"fire"} fire damage. A wildfire continues to threaten the characters for 1d10;{"diceNotation":"1d10","rollType":"roll","rollAction":"Wildfire Rounds"} rounds or until they

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

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

Storm Giant Quintessent Legacy

Monsters Volo's Guide to Monsters

can take a lair action to cause one of the following effects; the giant can't use the same effect two rounds in a row: The giant creates a thunderclap centered on a point anywhere in its lair. Each

D&D Beyond

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