cause finishes

Valetta

Monsters Waterdeep: Dragon Heist

Divine Eminence. As a bonus action, the priest can expend a spell slot to cause its melee weapon attacks to magically deal an extra 10 (3d6);{"diceNotation":"3d6","rollType":"damage","rollAction

":"Mace","rollDamageType":"bludgeoning"} bludgeoning damage. Dragonborn. She can use her action to exhale a 5-foot-wide, 30-foot line of lightning (but can't do this again until she finishes a short or

Sphinx of Judgment

Monsters Guildmasters’ Guide to Ravnica

. Lair Actions On initiative count 20 (losing initiative ties), the sphinx can take a lair action to cause one of the following magical effects; the sphinx can’t use an effect again until it

finishes a short or long rest: The flow of time is altered such that every creature in the lair must reroll initiative. The sphinx can choose not to reroll. The effects of time are altered such that

Stone Giant Rockspeaker

Monsters Bigby Presents: Glory of the Giants

object in its possession when it finishes a short or long rest.Multiattack. The giant makes three Prism Staff attacks. Prism Staff. Melee Weapon Attack: +11;{"diceNotation":"1d20+11", "rollType":"to

, these giants can turn these crystals into scintillating works of art. In combat, rockspeakers can use this same magic to cause their crystals to emit brilliantly colored, intense beams of light than can sear flesh and inhibit enemies.

Dybbuk

Monsters Mordenkainen Presents: Monsters of the Multiverse

":"Tentacle"}. This reduction lasts until the target finishes a short or long rest. The target dies if its hit point maximum is reduced to 0. Possess Corpse (Recharge 6);{"diceNotation":"1d6

Corpse. While Possess Corpse is active, the dybbuk makes the corpse do something unnatural, such as vomit blood, twist its head all the way around, or cause a quadruped to move as a biped. Any Beast

Halaster Blackcloak

Monsters Waterdeep: Dungeon of the Mad Mage

restrictions (see “Alterations to Magic”). Arcane Recovery (1/Day). When he finishes a short rest, Halaster recovers all his spell slots of 5th level and lower. Legendary Resistance (3

with spell attacks). He can cast disguise self and invisibility at will. He can cast fly and lightning bolt once each without expending a spell slot, but can’t do so again until he finishes a

Fire Giant Forgecaller

Monsters Bigby Presents: Glory of the Giants

, the giant can inscribe a fire rune on an object in its possession when it finishes a short or long rest.Multiattack. The giant makes three Forge Hammer attacks or two Heated Rock attacks. Forge

", "rollAction":"Forge Hammer", "rollDamageType":"bludgeoning"} bludgeoning damage. Hit or Miss: The giant can cause the hammer to emit a burst of heat in a 30-foot-radius sphere centered on the

Dyrrn

Monsters Eberron: Rising from the Last War

within the Palace of Sinew, Dyrrn can invoke the ambient magic to take lair actions. On initiative count 20 (losing initiative ties), Dyrrn can take a lair action to cause one of the following effects; it

each time it fails the saving throw for this lair action. The target dies if its Intelligence score is reduced to 0. The reduction lasts until the target finishes a short or long rest. Regional

Baernaloth

Monsters Planescape: Adventures in the Multiverse

wounded foes alive, sometimes indefinitely, to prolong their suffering. Even striking against a baernaloth brings misery—they can cause an attacker’s old wounds to painfully reopen. All the

regional effect for 24 hours. Slow Healing. Within 10 miles of a baernaloth’s lair, a creature other than the baernaloth regains only hit points equal to half its hit point maximum when it finishes

Demogorgon Legacy

Monsters Out of the Abyss

until the target finishes a long rest. The target dies if its hit point maximum is reduced to 0. Gaze. Demogorgon turns his magical gaze toward one creature that he can see within 120 feet of him. That

bulk of this palace extends deep underwater, in chill and darkened caverns. Lair Actions On initiative count 20 (losing initiative ties), Demogorgon can take a lair action to cause one of the

Adult Crystal Dragon

Monsters Fizban's Treasury of Dragons

antics sometimes cause avalanches that threaten nearby villages. 5 An adult crystal dragon enjoys shaping the ice and snow near a den of troll;trolls into a labyrinth and watching the trolls try to

any ice or quartz crystals in that region. Positive Energy. Any creature that finishes a long rest within 6 miles of the lair regains two additional spent Hit Dice. Thriving Wildlife. Animal

Mary Greymalkin

Monsters Lost Laboratory of Kwalish

Special Equipment. Mary wears bracers of defense and a ring of protection, and carries a deck of several things (see appendix D). Fey Presence (Recharges after a Short Rest). Mary can cause each

":"1d20+4","rollType":"to hit","rollAction":"Spellcasting"} to hit with spell attacks). She regains her expended spell slots when she finishes a short or long rest. She knows the following warlock

Gynosphinx Legacy

Monsters Basic Rules (2014)

mortals. Lair Actions On initiative count 20 (losing initiative ties), the sphinx can take a lair action to cause one of the following magical effects; the sphinx can’t use an effect again until it

finishes a short or long rest: The flow of time is altered such that every creature in the lair must reroll initiative. The sphinx can choose not to reroll. The effects of time are altered such

Wastrilith Legacy

Monsters Mordenkainen’s Tome of Foes

","rollType":"damage","rollDamageType":"poison"} poison damage and is poisoned until it finishes a long rest. If another demon drinks the foul water as an action, it gains 11 (2d10);{"diceNotation":"2d10

underwater, it can cause all water within 60 feet of it to be difficult terrain for other creatures until the start of its next turn.Multiattack. The wastrilith uses Grasping Spout and makes three

Androsphinx Legacy

Monsters Basic Rules (2014)

take a lair action to cause one of the following magical effects; the sphinx can’t use an effect again until it finishes a short or long rest: The flow of time is altered such that every

Living Ship

Equipment

. When the treant finishes a long rest, it repairs the ship’s hull, enabling the ship to regain 4d12 hit points, and refreshes the ship’s air envelope (turning deadly air into foul air, or foul

air into fresh air). A living ship can float on water and sail across it, but it can’t land safely on the ground (its keel would cause it to roll on its side). Its standard weaponry is an aft-mounted ballista.

Dybbuk Legacy

Monsters Mordenkainen’s Tome of Foes

cause a quadruped to move as a biped. Any beast or humanoid that sees this behavior must succeed on a DC 12 Wisdom saving throw or become frightened of the dybbuk for 1 minute. The frightened creature can

":"Tendril"}. This reduction lasts until the target finishes a short or long rest. The target dies if this effect reduces its hit point maximum to 0. Possess Corpse (Recharge 6);{"diceNotation":"1d6

Geryon Legacy

Monsters Mordenkainen’s Tome of Foes

become poisoned until it finishes a short or long rest. The target's hit point maximum is reduced by an amount equal to half the poison damage it takes. If its hit point maximum drops to 0, it dies

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

Geryon (Summoner Variant) Legacy

Monsters Mordenkainen’s Tome of Foes

become poisoned until it finishes a short or long rest. The target's hit point maximum is reduced by an amount equal to half the poison damage it takes. If its hit point maximum drops to 0, it dies

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

Enhanced Sphinx

Monsters Lost Laboratory of Kwalish

, within which are hidden divine secrets and treasures beyond the reach of mortals. Lair Actions On initiative count 20 (losing initiative ties), the sphinx can take a lair action to cause one of the

following magical effects; the sphinx can’t use an effect again until it finishes a short or long rest: The flow of time is altered such that every creature in the lair must reroll initiative

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

lair sometimes feel as if they’re being watched even when they aren’t. When a creature hostile to the tyrant and aware of its existence finishes a long rest within 1 mile of the tyrant

Morkoth Legacy

Monsters Volo's Guide to Monsters

to take lair actions. On initiative count 20 (losing initiative ties), the morkoth takes a lair action to cause one of the effects described below: The morkoth uses its Hypnosis action, originating

watched, even when they aren't. Each time a creature that has been on the island for less than a year finishes a short or long rest, it must make a DC 10 Intelligence (Investigation) check. On a

A Sphinx's Lair

Compendium - Sources->Dungeons & Dragons->Monster Manual (2014)

(losing initiative ties), the sphinx can take a lair action to cause one of the following magical effects; the sphinx can’t use an effect again until it finishes a short or long rest: The flow of time

Programmed Illusion

Compendium - Sources->Dungeons & Dragons->Player’s Handbook

cause a watchdog to appear and kindly ask intruders to leave When the trigger you specify occurs, the illusion springs into existence and performs in the manner you described. Once the illusion

finishes performing, it disappears and remains dormant for 10 minutes, after which the illusion can be activated again. The trigger can be as general or as detailed as you like, though it must be based on

Living Ship

Compendium - Sources->Dungeons & Dragons->Spelljammer: Adventures in Space->Astral Adventurer’s Guide

finishes a long rest, it repairs the ship’s hull, enabling the ship to regain 4d12 hit points, and refreshes the ship’s air envelope (turning deadly air into foul air, or foul air into fresh air). A living

ship can float on water and sail across it, but it can’t land safely on the ground (its keel would cause it to roll on its side). Its standard weaponry is an aft-mounted ballista. Living Ship Summary

Adult Deep Dragon Legacy

monsters Fizban's Treasury of Dragons

Underdark settlements are about to go to war, having been carefully manipulated by a deep dragon. A desperate ruler offers a reward to anyone who can uncover the true cause of the hostility. 8 A

of writing within 6 miles of the dragon’s lair become magically charged and can’t be damaged by nonmagical means. Restless Sleep. When a creature finishes a long rest within 6 miles of the

Ancient Deep Dragon Legacy

monsters Fizban's Treasury of Dragons

. 7 Two Underdark settlements are about to go to war, having been carefully manipulated by a deep dragon. A desperate ruler offers a reward to anyone who can uncover the true cause of the hostility

of the dragon’s lair become magically charged and can’t be damaged by nonmagical means. Restless Sleep. When a creature finishes a long rest within 6 miles of the lair, the creature must

19. Silver Coffer

Compendium - Sources->Dungeons & Dragons->Tales from the Yawning Portal->a3

of the slope on the alcove floor, 13 feet below where the coffer sits on its pedestal. Each creature that falls in this way takes 3 (1d6) bludgeoning damage. When the slab finishes moving, it locks

will be able to open the small panel, revealing a hollow inside which is a wall of lighted, colored beads. Touching any of the beads will cause the panel to close. A few seconds thereafter, the

12. Ras Nsi's Lair

Compendium - Sources->Dungeons & Dragons->Tomb of Annihilation

following information to save his skin: Ras Nsi is slowly rotting to death. He doesn’t know the cause of his affliction and has no way to cure it. Before he dies, Ras Nsi wants to bring forth Dendar

, reducing Ras Nsi’s bonus to AC by 2. When there are no more active shields, the effect ends, and Ras Nsi can’t use this power again until he finishes a long rest. A detect magic or similar effect reveals

Magic Items

Compendium - Sources->Dungeons & Dragons->The Book of Many Things

the target finishes a long rest, attack rolls against it score a critical hit on a roll of 19 or 20 on the d20. Once this property is used, it can’t be used again until the next dawn. Fate Dealer’s

, Uncommon This deck of cards is decorated with geometric shapes that have a protective motif. While you’re holding the deck, you can use an action to shuffle it and cause the cards to deal themselves out

Nabassu

Compendium - Sources->Dungeons & Dragons->Mordenkainen's Tome of Foes

catch. One way a summoner can avoid this fate is by providing a steady supply of souls to the nabassu, which can cause the demon to be cooperative — for as long as the supply lasts. Nabassu Medium

until the target finishes a short or long rest. The target dies if its hit point maximum is reduced to 0, and if the target is a humanoid, it immediately rises as a ghoul under the nabassu’s control.

Wastrilith

Compendium - Sources->Dungeons & Dragons->Mordenkainen's Tome of Foes

saving throw. On a failure, the creature takes 18 (4d8) poison damage and is poisoned until it finishes a long rest. If another demon drinks the foul water as an action, it gains 11 (2d10) temporary

hit points. Magic Resistance. The wastrilith has advantage on saving throws against spells and other magical effects. Undertow. As a bonus action when the wastrilith is underwater, it can cause all

Running Glitch Characters

Compendium - Sources->Dungeons & Dragons->Planescape: Adventures in the Multiverse->Turn of Fortune’s Wheel

convenient. Planar forces cause incarnations to appear in unlikely places, like in empty rooms, around bends in the road, or inside wardrobes. Let other characters happen across the incarnation

full suite of options would make the adventure less exciting, don’t have the incarnation reappear until after the group finishes a long rest, or have the incarnation reappear with their class features

Stone Giant Rockspeaker

Compendium - Sources->Dungeons & Dragons->Bigby Presents: Glory of the Giants

their skin. By invoking the power of their stone runes, these giants can turn these crystals into scintillating works of art. In combat, rockspeakers can use this same magic to cause their crystals to

finishes a short or long rest. Actions Multiattack. The giant makes three Prism Staff attacks. Prism Staff. Melee Weapon Attack: +11 to hit, reach 10 ft., one target. Hit: 16 (3d6 + 6) bludgeoning

Geryon

Compendium - Sources->Dungeons & Dragons->Mordenkainen's Tome of Foes

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 from the

somewhere in Stygia. Freezing strong winds howl around the area within 1 mile of the lair. Howls and screams fill the air within 1 mile of the lair. Any creature that finishes a short or long rest in

Fire Giant Forgecaller

Compendium - Sources->Dungeons & Dragons->Bigby Presents: Glory of the Giants

possession when it finishes a short or long rest. Actions Multiattack. The giant makes three Forge Hammer attacks or two Heated Rock attacks. Forge Hammer. Melee Weapon Attack: +13 to hit

, reach 10 ft., one target. Hit: 24 (5d6 + 7) bludgeoning damage. Hit or Miss: The giant can cause the hammer to emit a burst of heat in a 30-foot-radius sphere centered on the target. Metal objects in that

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