breathe becomes diffusing constant rules

Aboleth

Monsters Monster Manual

the aboleth’s turn. Failure: The target is cursed. Until the curse ends, the target’s skin becomes slimy, the target can breathe air and water, and it can’t regain Hit Points unless

Amphibious. The aboleth can breathe air and water. Eldritch Restoration. If destroyed, the aboleth gains a new body in 5d10;{"diceNotation":"5d10", "rollType":"roll", "rollAction":"Eldritch

Imprisonment

Spells Player’s Handbook

spell for the next 24 hours. On a failed save, the target is imprisoned. While imprisoned, the target doesn’t need to breathe, eat, or drink, and it doesn’t age. Divination spells can&rsquo

and planar travel. The demiplane is your choice of a labyrinth, a cage, a tower, or the like. Minimus Containment. The target becomes 1 inch tall and is trapped inside an indestructible gemstone or a

Warm Fungal Clothing

Equipment

Fungal Clothing, you automatically succeed on saving throws against the effects of extreme cold. See chapter 3 of the Dungeon Master's Guide for rules on extreme cold. One pound of fungus is sewn into

Fungal Clothing. This fungus can be eaten as food. Once all the fungus is consumed, this becomes a mundane set of Traveler's Clothes.

Biha Babir

Monsters Forgotten Realms: Adventures in Faerûn

Amphibious. Biha Babir can breathe air and water. Elemental Restoration. If Biha Babir dies outside the Elemental Plane of Water, her body dissolves into brine, and she gains a new body in 1d4

again until the start of her next turn.Scheming Marid Ruler The calculating Biha Babir rules the pelagic city of Maran Saya in Calimshan. Though her physical form is as fluid as the ocean itself, she

Calm Emotions Legacy

Spells Basic Rules (2014)

is hostile toward. This indifference ends if the target is attacked or harmed by a spell or if it witnesses any of its friends being harmed. When the spell ends, the creature becomes hostile again, unless the DM rules otherwise.

Fraternity of Order Law Bender

Monsters Planescape: Adventures in the Multiverse

turns, it can repeat the saving throw, ending the incapacitated condition on itself on a success. A target that succeeds on the saving throw becomes immune to this law bender’s Power of Authority

to be made with advantage or disadvantage.Members of the Fraternity of Order find and exploit loopholes in the laws of the multiverse. Law benders are magistrates who skirt the rules of probability

Darkmantle Legacy

Monsters Basic Rules (2014)

the attack roll, it attaches by engulfing the target’s head, and the target is also blinded and unable to breathe while the darkmantle is attached in this way. While attached to the target, the

darkmantle can attack no other creature except the target but has advantage on its attack rolls. The darkmantle’s speed also becomes 0, it can’t benefit from any bonus to its speed, and it

Aboleth Legacy

Monsters Basic Rules (2014)

Amphibious. The aboleth can breathe air and water. Mucous Cloud. While underwater, the aboleth is surrounded by transformative mucus. A creature that touches the aboleth or that hits it with a melee

. The diseased creature can breathe only underwater. Probing Telepathy. If a creature communicates telepathically with the aboleth, the aboleth learns the creature’s greatest desires if the

Boss Delour

Monsters The Book of Many Things

but otherwise uses the wererat stat block, excluding actions that require equipment the target doesn’t have. During any night when there’s a full moon in the sky, the target becomes an NPC

"} poison damage.Delour the wererat is a sly trickster and consummate thief who rules the Moonstalkers alongside his friend Boss Augustus;Augustus. Delour’s honeyed words and calculating mind make

Kuo-toa Legacy

Monsters Monster Manual (2014)

Amphibious. The kuo-toa can breathe air and water. Otherworldly Perception. The kuo-toa can sense the presence of any creature within 30 feet of it that is invisible or on the Ethereal Plane. It can

Strength saving throw, or the weapon becomes stuck to the kuo-toa’s shield. If the weapon’s wielder can’t or won’t let go of the weapon, the wielder is grappled while the weapon

Koalinth Sergeant

Monsters Ghosts of Saltmarsh

Amphibious. The koalinth can breathe air and water. Martial Advantage. Once per turn, the koalinth can deal an extra 7 (2d6);{"diceNotation":"2d6","rollType":"roll","rollAction":"Martial Advantage

harming it and destroys the net.Spear the Helpless (2/Day). Whenever a creature within 30 feet of the sergeant becomes restrained, the sergeant can move its speed toward the restrained creature. If the

Reduced-threat Darkmantle

Monsters Tales from the Yawning Portal

target. If the target is Medium or smaller and the darkmantle has advantage on the attack roll, it attaches by engulfing the target's head, and the target is also blinded and unable to breathe while

becomes 0, it can't benefit from any bonus to its speed, and it moves with the target. A creature can detach the darkmantle by making a successful DC 11 Strength check as an action. On its turn, the

Lowarnizel

Monsters Phandelver and Below: The Shattered Obelisk

Amphibious. Lowarnizel can breathe both air and water.Multiattack. Lowarnizel makes one Bite attack and two Claw attacks. Bite. Melee Weapon Attack: +9;{"diceNotation":"1d20+9", "rollType":"to hit

":"force"} force damage, and its speed becomes 0 until the start of the dragon’s next turn. On a successful save, a creature takes half as much damage only. Spellcasting (Psionics). Lowarnizel casts

Plasmid

monsters

Amphibious. The plasmid can breathe air and water. Receptive Telepathy. The plasmid is considered a shark for the purpose of being magically controlled by any sahuagin’s Shark Telepathy trait

becomes 0 in this form and it cannot attack. It can be used as an item or a set of Artisan’s Tools when it is in this form.Multiattack. The plasmid makes three Vicious Pseudopod attacks. Vicious

Young Dragon Turtle

Monsters Fizban's Treasury of Dragons

Amphibious. The dragon turtle can breathe air and water.Multiattack. The dragon turtle makes one Bite attack and two Claw attacks. Bite. Melee Weapon Attack: +9;{"diceNotation":"1d20+9","rollType

explicitly include dragon turtles in the variant rules for making a dragon a spellcaster, you can apply those rules to these aquatic dragons.) Dragon Turtle Personality Traits d8

Nereid

Monsters Tales from the Yawning Portal

Amphibious. The nereid can breathe air and water. Aquatic Invisibility. If immersed in water, the nereid can make itself invisible as a bonus action. It remains invisible until it leaves the water

hit points equal to that of the nereid, but the garment can’t be directly harmed while the nereid wears it. If the mantle is destroyed, the nereid becomes poisoned and dies within 1 hour. A

Hydroloth Legacy

Monsters Mordenkainen’s Tome of Foes

Amphibious. The hydroloth can breathe air and water. Innate Spellcasting. The hydroloth's innate spellcasting ability is Intelligence (spell save DC 16). It can innately cast the following spells

":"4d6","rollType":"damage","rollAction":"Steal Memory","rollDamageType":"psychic"} psychic damage, and it must make a DC 16 Intelligence saving throw. On a successful save, the target becomes immune to

Reduced-threat Aboleth

Monsters Tales from the Yawning Portal

Amphibious. The aboleth can breathe air and water. Mucous Cloud. While underwater, the aboleth is surrounded by transformative mucus. A creature that touches the aboleth or that hits it with a melee

. The diseased creature can breathe only underwater. Probing Telepathy. If a creature communicates telepathically with the aboleth, the aboleth learns the creature's greatest desires if the aboleth

Tile Chimera

Monsters Tyranny of Dragons

Rejuvenation. If destroyed, the tile chimera regains all its hit points and becomes active again in 24 hours unless at least half its tiles are collected and kept separate from the rest of the

. The tile chimera acts as a normal chimera magically animated, except it is a construct that doesn’t breathe, drink, eat, or sleep. It makes a clacking noise as it moves, and when injured, it

Dragon Turtle Wyrmling

Monsters Fizban's Treasury of Dragons

Amphibious. The dragon turtle can breathe air and water.Bite. Melee Weapon Attack: +5;{"diceNotation":"1d20+5","rollType":"to hit","rollAction":"Bite"} to hit, reach 10 ft., one target. Hit: 11 (1d12

characters, and use the Dragon Turtle Spellcasting table to help select spells for a spellcasting dragon. (Though the Monster Manual doesn’t explicitly include dragon turtles in the variant rules for

Seth the Shapeshifting Dragon

Monsters Misplaced Monsters: Volume One

Amphibious. Seth can breathe air and water. Invisible in Water. Seth has the invisible condition while fully immersed in water.Multiattack. Seth makes one Bite attack and two Claw attacks. Bite

concentrating on a spell). While his speed is increased in this way, all attack rolls against him are made with disadvantage, and he becomes partially incorporeal, allowing him to move through

Storm Giant Quintessent Legacy

Monsters Volo's Guide to Monsters

Amphibious. The giant can breathe air and water.Multiattack. The giant makes two Lightning Sword attacks or uses Wind Javelin twice. Lightning Sword. Melee Weapon Attack: +14;{"diceNotation":"1d20+14

protected from the wind. Rain, snow, or blowing dust or sand (whichever is most appropriate) is constant within 1 mile of the lair. Rain causes rivers and streams to fill or overflow their banks; snow

Kraken Legacy

Monsters Basic Rules (2014)

Amphibious. The kraken can breathe air and water. Freedom of Movement. The kraken ignores difficult terrain, and magical effects can't reduce its speed or cause it to be restrained. It can spend 5

’s lair becomes electrically charged. All creatures within 120 feet of the kraken must succeed on a DC 23 Constitution saving throw, taking 10 (3d6);{"diceNotation":"3d6","rollType":"damage

Hydroloth

Monsters Mordenkainen Presents: Monsters of the Multiverse

Amphibious. The hydroloth can breathe air and water. Magic Resistance. The hydroloth has advantage on saving throws against spells and other magical effects. Secure Memory. The hydroloth is immune

damage, and it must make a DC 16 Intelligence saving throw. On a successful save, the target becomes immune to this hydroloth’s Steal Memory for 24 hours. On a failed save, the target loses all

Sahuagin Claw of Sha'argon

monsters

Blood Frenzy. The sahuagin has Advantage on attack rolls against any creature that doesn’t have all its Hit Points. Limited Amphibiousness. The sahuagin can breathe air and water, but it must

. Toughened Carapace. Any Critical Hit against the sahuagin becomes a normal hit.Multiattack. The sahuagin makes three attacks, using Crushing Claw or Cutter Claw in any combination. It can replace one attack

Gar Shatterkeel

Monsters Princes of the Apocalypse

Amphibious. Gar can breathe air and water. Legendary Resistance (2/Day). If Gar fails a saving throw, he can choose to succeed instead. Spellcasting. Gar is a 9th-level spellcaster. His

);{"diceNotation":"1d8","rollType":"damage","rollAction":"Drown","rollDamageType":"cold"} cold damage.In the Water Node When it becomes clear that the Temple of the Crushing Wave is no longer secure, Gar

Storm Giant Quintessent

Monsters Mordenkainen Presents: Monsters of the Multiverse

Amphibious. The giant can breathe air and water. Legendary Resistance (1/Day). If the giant fails a saving throw, it can choose to succeed instead.Multiattack. The giant makes two Lightning Sword

of the following effects: Downpour. Rain, snow, or blowing dust or sand (whichever is most appropriate) is constant within 1 mile of the lair. Rain causes rivers and streams to fill or overflow

Naiad

Monsters Mythic Odysseys of Theros

Amphibious. The naiad can breathe air and water. Invisible in Water. The naiad is invisible while fully immersed in water. Magic Resistance. The naiad has advantage on saving throws against spells

all others. Over time, such a resident nymph often becomes connected with their aquatic home through sightings and stories, becoming a guardian of the place and, in effect, a manifestation of its

Yan-C-Bin

Monsters Princes of the Apocalypse

feet of him. The target must make a DC 21 Constitution saving throw. On a failed save, the target drops to 0 hit points and is dying. On a successful save, the target can’t breathe or speak

(Athletics) check. Thunderstorms erupt in a 5-mile radius centered on Yan-C-Bin’s lair, creating deafening cracks of thunder and constant lightning. Every ten minutes the storm rages, creatures standing

Adult Green Dragon Legacy

Monsters Basic Rules (2014)

Amphibious. The dragon can breathe air and water. Legendary Resistance (3/Day). If the dragon fails a saving throw, it can choose to succeed instead.Multiattack. The dragon can use its Frightful

erupt in a 20-foot radius centered on a point on the ground that the dragon can see within 120 feet of it. That area becomes difficult terrain, and each creature there must succeed on a DC 15 Strength

Ancient Green Dragon Legacy

Monsters Basic Rules (2014)

Amphibious. The dragon can breathe air and water. Legendary Resistance (3/Day). If the dragon fails a saving throw, it can choose to succeed instead.Multiattack. The dragon can use its Frightful

vines erupt in a 20-foot radius centered on a point on the ground that the dragon can see within 120 feet of it. That area becomes difficult terrain, and each creature there must succeed on a DC 15

Orcus Legacy

Monsters Out of the Abyss

chapter 7, "Treasure” of the Dungeon Master’s Guide.Orcus’s Lair Orcus makes his lair in the fortress city of Naratyr, which is on Thanatos, the layer of the Abyss that he rules

effects: Dead beasts periodically animate as undead mockeries of their former selves. Skeletal and zombie versions of local wildlife are commonly seen in the area. The air becomes filled with the

Plasmoid

Species Spelljammer: Adventures in Space

consume food by osmosis, the way an amoeba does, and excrete waste through tiny pores. They breathe by absorbing oxygen through another set of pores, and their limbs are strong and flexible enough to

presented here, follow these additional rules during character creation. Ability Score Increases When determining your character’s ability scores, increase one of those scores by 2 and increase a

Ancient Dragon Turtle

Monsters Fizban's Treasury of Dragons

Amphibious. The dragon turtle can breathe air and water Blessing of the Sea (Recharges after a Short or Long Rest). If the dragon turtle would be reduced to 0 hit points, its current hit point total

table to help select spells for a spellcasting dragon. (Though the Monster Manual doesn’t explicitly include dragon turtles in the variant rules for making a dragon a spellcaster, you can apply

Slarkrethel

Monsters Storm King's Thunder

Amphibious. Slarkrethel can breathe air and water. Freedom of Movement. Slarkrethel ignores difficult terrain, and magical effects can't reduce its speed or cause it to be restrained. It can spend 5

from the kraken. Creatures in the water within 60 feet of the kraken have vulnerability to lightning damage until initiative count 20 on the next round. The water in the kraken’s lair becomes

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