course returning ground to have reduces

Duergar Screamer

Monsters Mordenkainen Presents: Monsters of the Multiverse

creature.A duergar screamer uses sonic energy to grind rock into dust and to hurl invaders to the ground. Duergar Constructs Creative duergar engineers have built numerous war machines, including some

. Unless incapacitated, the duergar inside a machine can extricate themself from it over the course of a short rest, completing the process at the rest’s end.Poison

Eater of Knowledge

Monsters Planescape: Adventures in the Multiverse

damage. If this damage reduces the target to 0 hit points, the eater of knowledge kills the target by extracting and consuming its brain. Spellcasting (Psionics). The eater of knowledge casts one of the

before returning to their masters with delicious secrets. Unlike illithids, which overwhelm their foes with psionic power, eaters of knowledge use their physical strength to hold prey while burly feeding

Yeenoghu

Monsters Mordenkainen Presents: Monsters of the Multiverse

hunting ground, where he pursues captured mortals in a cruel game. Yeenoghu’s lair is a place of blood and death, populated by gnoll;gnolls, hyena;hyenas, and ghoul;ghouls (see the Monster Manual

. Yeenoghu causes an iron spike—5 feet tall and 1 inch in diameter—to burst from the ground at a point he can see within 100 feet of him. Any creature in the space where the spike emerges

Wyrmreaver Gauntlets

Magic Items Bigby Presents: Glory of the Giants

Originally crafted for ground-bound giant brawlers to fight against dragons and other enormous predators of the sky, these studded gauntlets are engraved with the dragon rune. While you are wearing

spectral fists that envelop the gauntlets and mimic your hand motions. The fists can also launch themselves to strike distant opponents, returning immediately to your space after they hit or miss

Yeenoghu Legacy

Monsters Out of the Abyss

. When Yeenoghu reduces a creature to 0 hit points with a melee attack on his turn, Yeenoghu can take a bonus action to move up to half his speed and make a bite attack.Multiattack. Yeenoghu makes three

hands before ripping out its throat with his teeth.Yeenoghu’s Lair Yeenoghu’s lair in the Abyss is called the Death Dells, its barren hills and ravines serving as one great hunting ground

Zombie Clot

Monsters Van Richten’s Guide to Ravenloft

creature’s next turn. Undead Fortitude. If damage reduces the zombie to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is radiant or

their disregard for their own well-being. A throng of zombies will douse a forest fire with their own ashes or march into a dragon’s maw until the monster chokes. In the course of their relentless

Mighty Fortress

Spells Xanathar's Guide to Everything

A fortress of stone erupts from a square area of ground of your choice that you can see within range. The area is 120 feet on each side, and it must not have any buildings or other structures on it

is furnished and decorated however you like, and it contains sufficient food to serve a nine-course banquet for up to 100 people each day. Furnishings, food, and other objects created by this spell

Zombie Plague Spreader

Monsters Van Richten’s Guide to Ravenloft

Undead Fortitude. If damage reduces the zombie to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is radiant or from a critical hit. On a

into a dragon’s maw until the monster chokes. In the course of their relentless marches, zombies might suffer all manner of trauma, potentially reducing them to masses of crawling limbs (see

Yuan-ti Mind Whisperer

Monsters Mordenkainen Presents: Monsters of the Multiverse

. Sseth’s Blessing. When the yuan-ti reduces an enemy to 0 hit points, the yuan-ti gains 9 temporary hit points.Multiattack. The yuan-ti makes two Bite attacks and one Scimitar attack, or it makes

ground between two factions, and thus spend a lot of energy making sure none of their allies learn of their conflicting connections. Even among Sseth-worshiping communities, mind whisperers are known

The Gardener

Monsters Quests from the Infinite Staircase

or larger plant within the lair. Vine Wall. A wall of grasping vines appears on the ground within 120 feet of the Gardener. The wall is up to 60 feet long, 10 feet high, and 5 feet thick, and it

back into the ground, freeing all creatures grappled by it, when the Gardener uses this lair action again or when the Gardener dies. Regional Effects The Eternal Garden has the following features

Orcus Legacy

Monsters Out of the Abyss

creatures whose combined average hit points don’t exceed 500. These undead magically rise up from the ground or otherwise form in unoccupied spaces within 300 feet of Orcus and obey his commands

. A Taste of Undeath. Orcus casts chill touch (17th level). Creeping Death (Costs 2 Actions). Orcus chooses a point on the ground that he can see within 100 feet of him. A cylinder of swirling

Orcus

Monsters Mordenkainen Presents: Monsters of the Multiverse

creatures whose combined average hit points don’t exceed 500. These creatures magically rise up from the ground or otherwise form in unoccupied spaces within 300 feet of Orcus and obey his commands

Tail or Necrotic Bolt attack. Creeping Death (Costs 2 Actions). Orcus chooses a point on the ground that he can see within 100 feet of him. A cylinder of swirling necrotic energy 60 feet tall and

Adult Lunar Dragon

Monsters Spelljammer: Adventures in Space

spent legendary actions at the start of its turn. Tail Attack. The dragon makes one Tail attack. Treacherous Ice. Magical ice covers the ground in a 20-foot radius centered on a point the dragon can

ancient or adult lunar dragon’s lair is warped by the dragon’s magic, which produces one or more of the following effects: Black Frost. A thin layer of black frost covers the ground

Ancient Lunar Dragon

Monsters Spelljammer: Adventures in Space

spent legendary actions at the start of its turn. Tail Attack. The dragon makes one Tail attack. Treacherous Ice. Magical ice covers the ground in a 20-foot radius centered on a point the dragon

covers the ground, which kills all ordinary plants growing within 6 miles of the lair if the dragon is ancient, or within 3 miles if the dragon is an adult. Haunting Moan. A haunting sound gets

Riverine

Monsters Journeys through the Radiant Citadel

. The riverine conjures swampy ground that briefly covers the ground in a 20-foot square the riverine can see within 120 feet of itself. That area becomes difficult terrain until initiative count

, 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

Daemogoth Titan

Monsters Strixhaven: A Curriculum of Chaos

the titan doesn’t heal.Daemogoth titans are towering monsters that blight the land around them. A daemogoth grows in power over the course of decades spent feeding on sorrow and draining life from

creature dies if this effect reduces its hit point maximum to 0. The blessing can be removed only by a wish spell.Psychic

Juiblex

Monsters Mordenkainen Presents: Monsters of the Multiverse

Juiblex chooses within the lair. The slime disintegrates after 1 hour. Slippery Slime. Juiblex slimes a square area of ground it can see within the lair. The area can be up to 10 feet on a side. When

Slime. Juiblex slimes a square area of ground it can see within the lair. The area can be up to 10 feet on a side. When the slime appears, each creature in that area must succeed on a DC 21 Strength

Zorak Lightdrinker

Monsters Waterdeep: Dungeon of the Mad Mage

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 this way and then buried in the ground rises

stems and branches become twisted and thorny. Shadows cast within 500 feet of the lair seem abnormally gaunt and sometimes move as though alive. A creeping fog clings to the ground within 500 feet of the

Lorthuun

Monsters Out of the Abyss

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 beholder becomes slimy; that area is difficult terrain until

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.

Reduced-threat Aboleth

Monsters Tales from the Yawning Portal

choose to be affected. Pools of water within 90 feet of the aboleth surge outward in a grasping tide. Any creature on the ground within 20 feet of such a pool must succeed on a DC 14 Strength saving

disappears. If the aboleth dies, the first two effects fade over the course of 3d10;{"diceNotation":"3d10","rollType":"roll"} days.

Juiblex Legacy

Monsters Out of the Abyss

initiative ties), Juiblex can take a lair action to cause one of the following effects; it can’t use the same effect two rounds in a row: Juiblex slimes a square area of ground it can see within the

Square","rollDamageType":"fire"} fire damage. Juiblex slimes a square area of ground it can see within the lair. The area can be up to 10 feet on a side. The slime lasts for 1 hour or until it is

Klauth

Monsters Storm King's Thunder

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 point on the ground the dragon can see within 120 feet of it

than the dragon on the ground in that area must succeed on a DC 15 Dexterity saving throw or be knocked prone. Volcanic gases form a cloud in a 20-foot-radius sphere centered on a point the dragon can

Baphomet Legacy

Monsters Out of the Abyss

be affected by this regional effect again for 24 hours. If Baphomet dies, these effects fade over the course of 1d10;{"diceNotation":"1d10","rollType":"roll"} days. Madness of Baphomet If a

;The world is my hunting ground. Others are my prey.” 61–80 “Hate comes easily to me and explodes into rage.” 81–00 “I see those who oppose me not as

Zariel

Monsters Mordenkainen Presents: Monsters of the Multiverse

ground. Any creature or object that touches the flame takes 7 (2d6);{"diceNotation":"2d6", "rollType":"damage", "rollAction":"Pyres", "rollDamageType":"fire"} fire damage, though it can take this

cleared away. If Zariel dies, these effects fade over the course of 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Days"} days. Cultists of Zariel Zariel grants special abilities to

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

Geryon (Variant)

Monsters Mordenkainen Presents: Monsters of the Multiverse

ground at a point he can see within 120 feet of him. The cold fills a cube, 10 feet on each side, centered on that point. Each creature in that area must succeed on a DC 21 Constitution saving throw

deposits a 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

Valin Sarnaster

Monsters Candlekeep Mysteries

","rollType":"roll","rollAction":"Hit Point Reduction"} for every 24 hours that elapse. If the curse reduces the target’s hit point maximum to 0, the target dies, and its body turns to dust. The curse

as the immortal heir of Savras’s realm. The Canopic Being came into her possession years ago, and an obsession with the dark rituals therein set the oracle on her present course. Valin has

Dyrrn

Monsters Eberron: Rising from the Last War

","rollAction":"Extract Brain","rollDamageType":"piercing"} piercing damage. If this damage reduces the target to 0 hit points, Dyrrn kills the target by extracting and devouring its brain.Dyrrn can take 3

can’t use the same effect two rounds in a row: Dyrrn uses its Corruption action. A 30-foot-square area of ground within 120 feet of Dyrrn sprouts tentacles until initiative count 20 on the

Zargon the Returner

Monsters Quests from the Infinite Staircase

lower affecting the targets end. Sucking Slime. Zargon creates a 20-foot-radius puddle of slime on the ground centered on a point within the lair. The slime is difficult terrain, and each creature in

patterns that defy the region’s typical climate. If Zargon dies, these effects fade over the course of 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Regional Effect Fade Time"} days.Acid, PoisonCold, Fire; Bludgeoning, Piercing, and Slashing from Nonmagical Attacks

Ancient Dragon Turtle

Monsters Fizban's Treasury of Dragons

indeed, legends suggest that many unwitting sailors wrecked at sea have mistaken slumbering dragon turtles for solid ground. Ancient dragon turtles might sleep for years or decades while floating

must succeed on a DC 15 Strength saving throw or be restrained until the end of its next turn. Steam Eruption. Steam erupts in a 15-foot cone from a point on the ground the dragon turtle can see within

Baba Yaga's Mortar and Pestle

Magic Items Tasha’s Cauldron of Everything

fine powder that's equally useful for cooking or alchemy. At the start of each of your turns, whatever is in the mortar takes 4d10 force damage. If this reduces the target's hit points to 0, the target

command the mortar to travel, you can instead throw out the dust or paste of something ground by the mortar and name a location on a different plane of existence or a different world on the Material

Belashyrra

Monsters Eberron: Rising from the Last War

successful one. If this damage reduces a creature to 0 hit points, it dies and transforms into a spectator under Belashyrra’s control and acts immediately after Belashyrra in the initiative order

effects fade over the course of 1d10;{"diceNotation":"1d10","rollType":"roll"} days. Madness of Belashyrra If a creature goes mad in Belashyrra’s lair or while it can see the daelkyr, it gains

Keresta Delvingstone

Monsters Waterdeep: Dungeon of the Mad Mage

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 this way and then buried in

the ground rises the following night as a vampire spawn under Keresta's control. Charm. Keresta targets one humanoid it can see within 30 feet of it. If the target can see Keresta, the target must

Teeth of Dahlver-Nar

Magic Items Tasha’s Cauldron of Everything

result is rolled after it’s been used, you draw the next lowest unused tooth on the table. Sowing Teeth. To sow the tooth, you place it on the ground in an unoccupied space within your reach

, or you throw it into an unoccupied space within 10 feet of you in a body of water that is at least 50 feet wide and 50 feet long. Upon doing so, the tooth burrows into the ground and vanishes, leaving

Arasta

Monsters Mythic Odysseys of Theros

","rollDamageType":"poison"} poison damage on a failed save, or half as much damage on a successful one. If the damage reduces the target to 0 hit points, the target is stable but poisoned for 1 hour, even

ground ripples and bursts over the monster, revealing itself as a wave of countless spiders. The tiny arachnids swarm the larger horror, girding it in skittering bodies. Fighting Arasta as a mythic

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