mechanism shell with once action for for land

Armor of Invulnerability

Magic Items Dungeon Master’s Guide

You have Resistance to Bludgeoning, Piercing, and Slashing damage while you wear this armor. Metal Shell. You can take a Magic action to give yourself Immunity to Bludgeoning, Piercing, and Slashing

Winged Boots

Magic Items Dungeon Master’s Guide

These boots have 4 charges and regain 1d4 expended charges daily at dawn. While wearing the boots, you can take a Magic action to expend 1 charge, gaining a Fly Speed of 30 feet for 1 hour. If you are flying when the duration expires, you descend at a rate of 30 feet per round until you land.

Summon Beast

Spells Player’s Handbook

You call forth a bestial spirit. It manifests in an unoccupied space that you can see within range and uses the Bestial Spirit stat block. When you cast the spell, choose an environment: Air, Land

commands (no action required by you). If you don’t issue any, it takes the Dodge action and uses its movement to avoid danger. Using a Higher-Level Spell Slot. Use the spell slot’s level

Wind Walk

Spells Player’s Handbook

a Magic action followed by a 1-minute transformation. If a target is in cloud form and flying when the effect ends, the target descends 60 feet per round for 1 minute until it lands, which it does safely. If it can’t land after 1 minute, it falls the remaining distance.

can hover; it has Immunity to the Prone condition; and it has Resistance to Bludgeoning, Piercing, and Slashing damage. The only actions a target can take in this form are the Dash action or a Magic

Broom of Flying

Magic Items Dungeon Master’s Guide

This wooden broom functions like a mundane broom until you stand astride it and take a Magic action to make it hover beneath you, at which time it can be ridden in the air. It has a Fly Speed of 50

feet. It can carry up to 400 pounds, but its Fly Speed becomes 30 feet while carrying over 200 pounds. The broom stops hovering when you land or when you’re no longer riding it. As a Magic

Kuo-Toa Marauder

Monsters Heroes of the Borderlands

":"Slashing"} Slashing damage.Kuo-toa have slimy, humanoid bodies and the heads of goggle-eyed deep-sea fish. They claim they once dominated whole worlds, their empires spanning land and sea under the blessings

lurk in wet places, eager to shed blood and claim plunder.Slippery. The kuo-toa takes the Disengage action.

Mechanical Wonder

Magic Items Forgotten Realms: Adventures in Faerûn

Utilize action each turn. Once wound, a Mechanical Wonder remains activated for the duration specified in the wonder's description below. Domestic Wonder (Uncommon). This bipedal wonder is designed to

your allies. In combat, the wonder shares your Initiative count, but it takes its turn immediately after yours. It obeys your verbal commands (no action required by you). If you don't issue any, it

Mechanical Wonder

Magic Items Forgotten Realms: Heroes of Faerûn

Utilize action each turn. Once wound, a Mechanical Wonder remains activated for the duration specified in the wonder’s description below. Domestic Wonder (Uncommon). This bipedal wonder is

and your allies. In combat, the wonder shares your Initiative count, but it takes its turn immediately after yours. It obeys your verbal commands (no action required by you). If you don’t issue

Tortle

Monsters Mordenkainen Presents: Monsters of the Multiverse

":"Light Crossbow", "rollDamageType":"piercing"} piercing damage. Shell Defense. The tortle withdraws into its shell. Until it emerges, it gains a +4 bonus to AC and has advantage on Strength and

Constitution saving throws. While in its shell, the tortle is prone, its speed is 0 and can’t increase, it has disadvantage on Dexterity saving throws, it can’t take reactions, and the only

Tortle Druid

Monsters Mordenkainen Presents: Monsters of the Multiverse

;{"diceNotation":"2d6+2", "rollType":"damage", "rollAction":"Nature's Wrath (Thunder)", "rollDamageType":"thunder"}. Shell Defense. The tortle withdraws into its shell. Until it emerges, it gains a +4 bonus to

AC and has advantage on Strength and Constitution saving throws. While in its shell, the tortle is prone, its speed is 0 and can’t increase, it has disadvantage on Dexterity saving throws, it can

Flail Snail

Monsters Mordenkainen Presents: Monsters of the Multiverse

snail withdraws into its shell. Until it emerges, it gains a +4 bonus to its AC and is restrained. It can emerge from its shell as a bonus action on its turn.A flail snail is a creature of elemental

Antimagic Shell. The snail has advantage on saving throws against spells, and any creature making a spell attack against the snail has disadvantage on the attack roll. If the snail succeeds on its

Krull

Monsters Baldur’s Gate: Descent into Avernus

":"damage","rollDamageType":"necrotic"} necrotic damage. Shell Defense. Krull withdraws into his shell. Until he emerges as a bonus action, he has a +4 bonus to AC and has advantage on Strength and

Constitution saving throws. While in his shell, Krull is prone, his speed is 0 and can't increase, he has disadvantage on Dexterity saving throws, he can't take reactions, and the only action he can take is to emerge from his shell.

Tortle Druid Legacy

Monsters The Tortle Package

hands. Shell Defense. The tortle withdraws into its shell. Until it emerges, it gains a +4 bonus to AC and has advantage on Strength and Constitution saving throws. While in its shell, the tortle is

prone, its speed is 0 and can't increase, it has disadvantage on Dexterity saving throws, it can't take reactions, and the only action it can take is a bonus action to emerge.

Tortle Legacy

Monsters The Tortle Package

throws. While in its shell, the tortle is prone, its speed is 0 and can't increase, it has disadvantage on Dexterity saving throws, it can't take reactions, and the only action it can take is a bonus action to emerge.

Crossbow","rollDamageType":"piercing"} piercing damage. Shell Defense. The tortle withdraws into its shell. Until it emerges, it gains a +4 bonus to AC and has advantage on Strength and Constitution saving

Kalka-Kylla

Monsters Tales from the Yawning Portal

can use a bonus action to retract into or emerge from its shell. While retracted, Kalka-Kylla gains a +4 bonus to AC, and it has a speed of 0 and can't benefit from bonuses to speed.Multiattack. Kalka

Amphibious. Kalka-Kylla can breathe air and water. False Appearance. While Kalka-Kylla remains motionless and hidden in its shell, it is indistinguishable from a polished boulder. Shell. Kalka-Kylla

Giant Snail

Monsters The Wild Beyond the Witchlight

bonus to its AC until it emerges. It can emerge from its shell as a bonus action on its turn.These large mollusks retreat into their hardy shells when threatened, and they’re particularly susceptible to being injured by contact with salt.

"} necrotic damage. Using an action to sprinkle a pound of salt on the snail deals 1d4;{"diceNotation":"1d4","rollType":"damage","rollAction":"Salt Osmosis","rollDamageType":"necrotic"} necrotic

Flail Snail Legacy

Monsters Volo's Guide to Monsters

when this power is activated must succeed on a DC 15 Wisdom saving throw or be stunned until the light ends. Shell Defense. The flail snail withdraws into its shell, gaining a +4 bonus to AC until it emerges. It can emerge from its shell as a bonus action on its turn.Fire, Poison

Antimagic Shell. The snail has advantage on saving throws against spells, and any creature making a spell attack against the snail has disadvantage on the attack roll. If the snail succeeds on its

Whymsee (Kraken Priest Variant)

Monsters Locathah Rising

":"poison"} poison damage on a failed save, or half as much damage on a successful one. A strong current disperses the cloud, which otherwise disappears at the end of Whymsee's next turn. Shell

Defense. Whymsee withdraws into her shell. Until she emerges, she gains a +4 bonus to AC and has advantage on Strength and Constitution saving throws. While in her shell, Whymsee is prone, her speed is 0

Snapping Hydra

Monsters Monstrous Compendium Vol. 4: Eldraine Creatures

. The hydra withdraws its limbs and heads into its shell. Until it emerges as a bonus action, it gains a +4 bonus to AC and has advantage on Strength and Constitution saving throws. While in its shell

", "rollAction":"Bite"} to hit, reach 10 ft., one target. Hit: 14 (2d8 + 5);{"diceNotation":"2d8+5", "rollType":"damage", "rollAction":"Bite", "rollDamageType":"piercing"} piercing damage. Shell Defense

Firbolg Legacy

Species Volo's Guide to Monsters

the group’s needs, but the effect each action will have on the forest and the rest of the natural world. Firbolg tribes would rather go hungry than strain the land during a famine. Hidden

heart of the world and monuments to the durability of life. In their role as caretakers, firbolgs live off the land while striving to remain in balance with nature. Their methods reflect common

Zaratan

Monsters Mordenkainen Presents: Monsters of the Multiverse

attack. Retract (Costs 2 Actions). The zaratan retracts into its shell. Until it takes its Emerge action, it has resistance to all damage, and it is restrained. The next time it takes a legendary

action, it must take its Revitalize or Emerge action. Revitalize (Costs 2 Actions). The zaratan can use this option only if it is retracted in its shell. It regains 52 (5d20);{"diceNotation":"5d20

Jammer Leech

Monsters Spelljammer: Adventures in Space

, with the leech inside in larval form. A spore that remains attached to a ship for a few days punctures the hull and begins to develop a hard shell that roughly matches the color of the hull. The

shell is affixed to the ship by a glue-like substance secreted by the leech. The shell grows until it’s about 1 foot in diameter. The leech inside is reddish-purple in color, with a body resembling

Summon Beast Legacy

Spells Tasha’s Cauldron of Everything

environment: Air, Land, or Water. The creature resembles an animal of your choice that is native to the chosen environment, which determines certain traits in its stat block. The creature disappears when it

. It obeys your verbal commands (no action required by you). If you don’t issue any, it takes the Dodge action and uses its move to avoid danger. At Higher Levels. When you cast this spell using a

Conch of Teleportation

Magic Items Storm King's Thunder

This item is an ordinary, albeit rather large, conch shell that has been inscribed with the uvar rune. The conch measures 2½ feet long and weighs 20 pounds. As an action, you can cast the

teleport spell by blowing into the shell. The destination is fixed, and there is no chance of either a mishap or the spell being off target. Anyone teleported by the conch appears in a specific location

Bulette Legacy

Monsters Basic Rules (2014)

the bulette jumps at least 15 feet as part of its movement, it can then use this action to land on its feet in a space that contains one or more other creatures. Each of those creatures must succeed

Zaratan Legacy

Monsters Mordenkainen’s Tome of Foes

uses Spit Rock. Retract (Costs 2 Actions). The zaratan retracts into its shell. Until it takes its Emerge action, it has resistance to all damage, and it is restrained. The next time it takes a

legendary action, it must take its Revitalize or Emerge action. Revitalize (Costs 2 Actions). The zaratan can use this option only if it is retracted in its shell. It regains 52 (5d20);{"diceNotation

Orb of Gonging

Magic Items Waterdeep: Dungeon of the Mad Mage

This common wondrous item is a hollow, 5-inch-diameter orb that weighs 5 pounds. Its outer shell is composed of notched bronze rings, which can be turned so that the notches line up. Aligning the

notches requires an action, and doing so causes the orb to gong loudly until the notches are no longer aligned. The sounds are spaced 6 seconds apart and can be heard out to a range of 600 feet.

Triton Master of Waves

Monsters Mythic Odysseys of Theros

: cone of cold 1/day each: fog cloud, gust of wind, wind wall Summon Water Weird (Recharges after a Short or Long Rest). As a bonus action, the triton magically summons 1d4;{"diceNotation":"1d4

ally, using it to defend their people or enact Thassa’s wishes. While dire threats from the land might bring them to coastal shallows, most masters of waves keep to the ocean’s depths

Plant Growth Legacy

Spells Basic Rules (2014)

This spell channels vitality into plants within a specific area. There are two possible uses for the spell, granting either immediate or long-term benefits. If you cast this spell using 1 action

it moves. You can exclude one or more areas of any size within the spell's area from being affected. If you cast this spell over 8 hours, you enrich the land. All plants in a half-mile radius

Wind Walk Legacy

Spells Basic Rules (2014)

and has resistance to damage from nonmagical weapons. The only actions a creature can take in this form are the Dash action or to revert to its normal form. Reverting takes 1 minute, during which time

the effect ends, the creature descends 60 feet per round for 1 minute until it lands, which it does safely. If it can't land after 1 minute, the creature falls the remaining distance.

Adult Black Dragon Legacy

Monsters Basic Rules (2014)

a failed save, or half as much damage on a successful one.The dragon can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at

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

Ancient Black Dragon Legacy

Monsters Basic Rules (2014)

failed save, or half as much damage on a successful one.The dragon can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the

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

Egg Hunter Hatchling

Monsters Fizban's Treasury of Dragons

new eggs, which hatch inside the dragon egg’s shell in 1d6 days. The egg hunter hatchlings burst forth 1d4 days later, using the needlelike egg tooth that extends from their heads. They are

hunters are parasites that seek out dragon eggs and feed on the contents. They deposit their own eggs into the empty shells, hiding the eggs from unsuspecting dragon parents or guardians.Rapid Movement. The egg hunter takes the Dash or Disengage action.

Triton Shorestalker

Monsters Mythic Odysseys of Theros

components: 1/day each: fog cloud, gust of wind Nimble Escape. The triton can take the Disengage or Hide actions as a bonus action on each of its turns.Multiattack. The triton makes two urchin-spine

to most land-dwelling individuals. While the waves separate most tritons from land-dwellers, occasionally the inhabitants of the surface and the deep come into conflict. In such cases, tritons prove

Wingwear

Magic Items Princes of the Apocalypse

suit, you can use a bonus action and expend 1 charge to gain a flying speed of 30 feet until you land. At the end of each of your turns, your altitude drops by 5 feet. Your altitude drops instantly

to 0 feet at the end of your turn if you didn’t fly at least 30 feet horizontally on that turn. When your altitude drops to 0 feet, you land (or fall), and you must expend another charge to use

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