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Returning 35 results for 'course area'.
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Magic Items
Dungeon Master’s Guide
While holding this rod, you can take a Reaction to absorb a spell that is targeting only you and doesn’t create an area of effect. The absorbed spell’s effect is canceled, and the spell
cast it are wasted. The rod can absorb and store up to 50 levels of energy over the course of its existence. Once the rod absorbs 50 levels of energy, it can’t absorb more. If you are targeted
Spells
Player’s Handbook
Until the spell ends, you control any water inside an area you choose that is a Cube up to 100 feet on a side, using one of the following effects. As a Magic action on your later turns, you can
repeat the same effect or choose a different one.
Flood. You cause the water level of all standing water in the area to rise by as much as 20 feet. If you choose an area in a large body of water, you
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
Monsters
Mordenkainen Presents: Monsters of the Multiverse
a 15-foot cube. Each creature in that area must succeed on a DC 11 Strength saving throw or take 7 (2d6);{"diceNotation":"2d6", "rollType":"damage", "rollAction":"Sonic Scream", "rollDamageType
.
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
Monsters
The Wild Beyond the Witchlight
Constructs, Elementals, Plants, or Undead. Each other creature in the area must make a DC 10 Wisdom saving throw. On a failed save, the creature is incapacitated and its speed is halved, both for 1 minute. A
purified soil (stripped of things nourishing to fungi, of course). Eating salt is also a defense mechanism, because it makes the campestris taste salty and thus unpleasant to most creatures, though bullywugs consider them a delicacy.
Monsters
Bigby Presents: Glory of the Giants
into the area for the first time on a turn or starts its turn there must succeed on a DC 16 Constitution saving throw or take 10 (3d6);{"diceNotation":"3d6", "rollType":"damage", "rollAction":"Death
);{"diceNotation":"1d6", "rollType":"recharge", "rollAction":"Wave of Cinders"}. The cinder hulk emits a wave of smoldering ash from its face, hands, or chest in a 30-foot cone. Each creature in that area must make
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
. Any creatures in the area are harmlessly lifted up as the fortress rises.
The fortress has four turrets with square bases, each one 20 feet on a side and 30 feet tall, with one turret on each corner
Monsters
Van Richten’s Guide to Ravenloft
centered on itself. Each creature in that area must make a DC 12 Constitution saving throw, taking 14 (4d6);{"diceNotation":"4d6","rollType":"damage","rollAction":"Virulent Miasma","rollDamageType
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
Monsters
The Wild Beyond the Witchlight
in the area must make a DC 10 Wisdom saving throw. On a failed save, the creature is incapacitated and its speed is halved, both for 1 minute. A creature can repeat the saving throw at the end of each
, of course). Eating salt is also a defense mechanism, because it makes the campestris taste salty and thus unpleasant to most creatures, though bullywugs consider them a delicacy.Bludgeoning, Piercing, Slashing
Monsters
Mordenkainen Presents: Monsters of the Multiverse
":"recharge","rollAction":"Mind-Breaking Howl"}. The howler emits a keening howl in a 60-foot cone. Each creature in that area must succeed on a DC 13 Wisdom saving throw or take 16 (3d10);{"diceNotation
hesitation. Howler packs course over the battlefields of the Blood War and also serve evil mortals powerful and vicious enough to command their loyalty.
Howlers rely on speed, numbers, and their mind
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
the slime appears, each creature on it must succeed on a DC 21 Dexterity saving throw or fall prone and slide 10 feet in a random direction determined by a d8 roll. When a creature enters the area for
Monsters
Out of the Abyss
Antimagic Cone. The beholder's central eye creates an area of antimagic, as in the antimagic field spell, in a 150-foot-cone. At the start of each of its turns, the beholder decides which way the
cone faces and whether the cone is active. The area works against the beholder's own eye rays.Bite. Melee Weapon Attack: +5;{"diceNotation":"1d20+5","rollType":"to hit","rollAction":"Bite"} to hit, reach
Monsters
Planescape: Adventures in the Multiverse
":"recharge", "rollAction":"Time Breath"}. The dragon exhales a wave of shimmering light in a 60-foot cone. Nonmagical objects and vegetation in that area that aren’t being worn or carried crumble to
dust. Each creature in that area must make a DC 20 Constitution saving throw. On a failed save, a creature takes 36 (8d8);{"diceNotation":"8d8", "rollType":"damage", "rollAction":"Time Breath
Monsters
Guildmasters’ Guide to Ravnica
magically emits psychic energy in a 60-foot cone. Each creature in that area must succeed on a DC 15 Wisdom saving throw or take 22 (5d8);{"diceNotation":"5d8","rollType":"damage","rollAction":"Mind
specter survives, it can create a new gloamwing over the course of a month, during which time the specter is incapacitated.
A gloamwing’s head is almost ratlike, with prominent teeth, and its
Monsters
Van Richten’s Guide to Ravenloft
/Day). The carrion stalker releases a burst of larvae in a 10-foot-radius sphere centered on itself. Each creature in that area must succeed on a DC 13 Constitution saving throw or be poisoned. A
kills the larvae.A carrion stalker begins life as a pale larva that infests a corpse. Over the course of weeks, this grub burrows, feeds, and grows, ultimately developing into a chitinous mass of pincers
Monsters
Journeys through the Radiant Citadel
Rush","rollDamageType":"cold"} cold damage.
Raging Deluge (Costs 2 Actions). The riverine unleashes a torrent of river water in a 30-foot line that is 5 feet wide. Each creature in that area must
. 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
Monsters
Mordenkainen Presents: Monsters of the Multiverse
hour, as its head takes on fiendish aspects. The curse doesn’t advance while the target is in sunlight or the area of a daylight spell; don’t count that time. When the cursed target’s
’s curse. If the curse is allowed to run its course, an abyssal spirit invades the person’s body, causing a gruesome transformation. Over a period of hours, the victim’s head takes on
Juiblex
Legacy
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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
lair. The area can be up to 10 feet on a side. The slime lasts for 1 hour or until it is burned away with fire. When the slime appears, each creature in that area must succeed on a DC 21 Strength
Orcus
Legacy
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Monsters
Out of the Abyss
necrotic energy 60 feet tall and with a 10-foot radius rises from that point and lasts until the end of Orcus’s next turn. Creatures in that area are vulnerable to necrotic damage.Orcus is the Demon
;skeletons, zombie;zombies, or ghoul;ghouls. These undead obey his telepathic commands, which can reach anywhere in the lair.
Orcus causes skeletal arms to rise from an area on the ground in a 20-foot
Monsters
Mordenkainen Presents: Monsters of the Multiverse
Undead mockeries of their former selves. Skeletal and zombie versions of local wildlife are commonly seen in the area.
If Orcus dies, these effects fade over the course of 1d10;{"diceNotation":"1d10
with a 10-foot radius rises from that point and lasts until the end of Orcus’s next turn. Creatures in that area have vulnerability to necrotic damage.Orcus is the Demon Prince of Undeath, also
Monsters
Spelljammer: Adventures in Space
dust and frost known as moon devils crisscross the area within 1 mile of the lair, intercepting other creatures they encounter. A moon devil is a free-willed air elemental that deals cold damage instead
of bludgeoning damage.
If the dragon dies, the moaning stops, the moon devils dissipate, and the black frost disappears over the course of 1d10;{"diceNotation":"1d10","rollType":"roll","rollAction
Monsters
Spelljammer: Adventures in Space
;Swirling funnels of dust and frost known as moon devils crisscross the area within 1 mile of the lair, intercepting other creatures they encounter. A moon devil is a free-willed air elemental that deals
cold damage instead of bludgeoning damage.
If the dragon dies, the moaning stops, the moon devils dissipate, and the black frost disappears over the course of 1d10;{"diceNotation":"1d10","rollType
Monsters
Mordenkainen Presents: Monsters of the Multiverse
normally docile. Within that area, any ability check involving Animal Handling has disadvantage.
Venomous Beasts. The area within 6 miles of the lair becomes overpopulated with poisonous snake
;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
Monsters
Planescape: Adventures in the Multiverse
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.
Breath"}. The dragon exhales a wave of shimmering light in a 90-foot cone. Nonmagical objects and vegetation in that area that aren’t being worn or carried crumble to dust. Each creature in that area
Monsters
Mordenkainen Presents: Monsters of the Multiverse
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 or take
The region containing Geryon’s lair is warped by his magic, creating one or more of the following effects:
Chilling Wind. Freezing strong winds howl around the area within 1 mile of the lair
Monsters
Mordenkainen Presents: Monsters of the Multiverse
:
Hellscape. The area within 9 miles of the lair is filled with screaming voices and the stench of burning meat.
Pyres. Once every 60 feet within 1 mile of the lair, 10-foot-high gouts of flame rise from the
damage no more than once per round.
Smoke. The area within 2 miles of the lair, but no closer than 500 feet, is filled with smoke, which causes the area to be heavily obscured. The smoke can’t be
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
Effects
The region containing Geryon’s lair is warped by his magic, creating one or more of the following effects:
Chilling Wind. Freezing strong winds howl around the area within 1 mile of
Monsters
Storm King's Thunder
","rollAction":"Fire Breath"}. Klauth exhales fire in a 90-foot cone. Each creature in that area must make a DC 25 Dexterity saving throw, taking 91 (26d6);{"diceNotation":"26d6","rollType":"damage","rollAction
, creating a 20-foot-high, 5-foot-radius geyser. Each creature in the geyser’s area must make a DC 15 Dexterity saving throw, taking 21 (6d6);{"diceNotation":"6d6","rollType":"damage","rollAction
Monsters
The Book of Many Things
within 300 feet of itself. The sphere spreads around corners. The sphere remains for 10 minutes or until Aurnozci uses this lair action again. The sphere’s area is heavily obscured and is
damage on a successful one. A creature must also make this saving throw when it enters the sphere’s area for the first time on a turn or starts its turn there.
Regional Effects
Xulregg is an
Monsters
The Book of Many Things
, filling a 10-foot cube within 5 feet of the assassin. Each creature of the assassin’s choice in that area takes 9 (2d8);{"diceNotation":"2d8", "rollType":"damage", "rollAction":"Vanishing Escape
to poison damage.
If the villain dies, these effects fade over the course of 1d10;{"diceNotation":"1d10", "rollType":"roll", "rollAction":"Days"} days.
Monsters
Candlekeep Mysteries
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
become a powerful undead as the first step on her path to godhood, and is now a mummy lord.
Valin can use her lair actions in any area of the tomb.
Personality Trait. “I have seen the future
Monsters
Quests from the Infinite Staircase
":"recharge", "rollAction":"Slime Wave"}. Zargon spews slime in a 60-foot cone. Each creature in that area that isn’t an Aberration or Ooze must make a DC 19 Constitution saving throw. On a failed
that area when the slime appears has the grappled condition (escape DC 15). Aberrations and Oozes are unaffected by the slime. The slime lasts until Zargon dies or until it uses this lair action
Monsters
Mordenkainen Presents: Monsters of the Multiverse
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
Monsters
Fizban's Treasury of Dragons
-foot cone. Each creature in that area must make a DC 22 Constitution saving throw, taking 49 (11d8);{"diceNotation":"11d8", "rollType":"damage", "rollAction":"Scintillating Breath", "rollDamageType
crystal dragon who has guarded a mountain pass for decades unexpectedly retires to the Elemental Plane of Air. Monstrous forces immediately move into the area—and might take control of the pass
Demogorgon
Legacy
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Monsters
Out of the Abyss
, creating one or more of the following effects:
The area within 6 miles of the lair becomes overpopulated with lizards, poisonous snakes, and other venomous beasts.
Beasts within 1 mile of the lair become
, 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