monster set with once area for for longer

Alarm

Spells Player’s Handbook

You set an alarm against intrusion. Choose a door, a window, or an area within range that is no larger than a 20-foot Cube. Until the spell ends, an alarm alerts you whenever a creature touches or

enters the warded area. When you cast the spell, you can designate creatures that won’t set off the alarm. You also choose whether the alarm is audible or mental: Audible Alarm. The alarm

Cloak of the Bat

Magic Items Dungeon Master’s Guide

ever fail to grip the cloak’s edges while flying in this way, or if you are no longer in Dim Light or Darkness, you lose this Fly Speed. While wearing the cloak in an area of Dim Light or

While wearing this cloak, you have Advantage on Dexterity (Stealth) checks. In an area of Dim Light or Darkness, you can grip the edges of the cloak and use it to gain a Fly Speed of 40 feet. If you

Commune with Nature

Spells Player’s Handbook

, you could determine the location of a powerful monster in the area, the locations of bodies of water, and the locations of any towns.

You commune with nature spirits and gain knowledge of the surrounding area. In the outdoors, the spell gives you knowledge of the area within 3 miles of you. In caves and other natural underground

Glyph of Warding

Spells Player’s Handbook

) to conceal the glyph. The glyph can cover an area no larger than 10 feet in diameter. If the surface or object is moved more than 10 feet from where you cast this spell, the glyph is broken, and the

spell ends without being triggered. The glyph is nearly imperceptible and requires a successful Wisdom (Perception) check against your spell save DC to notice. When you inscribe the glyph, you set

Bead of Force

Magic Items Dungeon Master’s Guide

the area are pushed away from the center of the sphere until they are no longer inside it. Only breathable air can pass through the sphere’s wall. No attack or other effect can pass through. An

force then encloses the area for 1 minute. Any creature that failed the save and is completely within the area is trapped inside this sphere. Creatures that succeeded on the save or are partially within

Tarrasque

Monsters Monster Manual

":"Reflective Carapace"}. On a 1–5, the tarrasque is unaffected. On a 6, the tarrasque is unaffected and reflects the spell, turning the caster into the target. Siege Monster. The tarrasque deals

of this movement, the tarrasque creates an instantaneous shock wave in a 60-foot Emanation originating from itself. Creatures in that area lose Concentration and, if Medium or smaller, have the Prone

Entangle

Spells Player’s Handbook

Grasping plants sprout from the ground in a 20-foot square within range. For the duration, these plants turn the ground in the area into Difficult Terrain. They disappear when the spell ends. Each

creature (other than you) in the area when you cast the spell must succeed on a Strength saving throw or have the Restrained condition until the spell ends. A Restrained creature can take an action to

Kraken

Monsters Monster Manual

Amphibious. The kraken can breathe air and water. Legendary Resistance (4/Day, or 5/Day in Lair). If the kraken fails a saving throw, it can choose to succeed instead. Siege Monster. The kraken

(3d8 + 10);{"diceNotation":"3d8+10", "rollType":"damage", "rollAction":"Swallow", "rollDamageType":"Piercing"} Piercing damage. If the target is Large or smaller, it is swallowed and no longer Grappled

Helm of Brilliance

Magic Items Dungeon Master’s Guide

This helm is set with 1d10 diamonds, 2d10 rubies, 3d10 fire opals, and 4d10 opals. Any gem pried from the helm crumbles to dust. When all the gems are removed or destroyed, the helm loses its magic

. You gain the following benefits while wearing the helm. Diamond Light. As long as it has at least one diamond, the helm emits a 30-foot Emanation. When at least one Undead is within that area, the

Otiluke's Freezing Sphere

Spells Player’s Handbook

A frigid globe streaks from you to a point of your choice within range, where it explodes in a 60-foot-radius Sphere. Each creature in that area makes a Constitution saving throw, taking 10d6 Cold

damage on failed save or half as much damage on a successful one. If the globe strikes a body of water, it freezes the water to a depth of 6 inches over an area 30 feet square. This ice lasts for 1

Symbol

Spells Player’s Handbook

You inscribe a harmful glyph either on a surface (such as a section of floor or wall) or within an object that can be closed (such as a book or chest). The glyph can cover an area no larger than 10

. The glyph is nearly imperceptible and requires a successful Wisdom (Perception) check against your spell save DC to notice. When you inscribe the glyph, you set its trigger and choose which effect the

Rod of Absorption

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

as normal. For example, you can use 3 levels stored in the rod as a level 3 spell slot. A newly found rod typically has 1d10 levels of spell energy stored in it. A rod that can no longer absorb spell energy and has no energy remaining becomes nonmagical.

Staff of Power

Magic Items Dungeon Master’s Guide

must expend to cast the spell. Spell Charge Cost Cone of Cold 5 Fireball (level 5 version) 5 Globe of Invulnerability 6 Hold Monster 5 Levitate 2 Lightning

charges in the staff . Each other creature in the area makes a DC 17 Dexterity saving throw. On a failed save, a creature takes Force damage equal to 4 times the number of charges in the staff . On a successful save, a creature takes half as much damage.

Bag of Beans

Magic Items Dungeon Master’s Guide

This heavy cloth bag contains 3d4 dry beans when found. The bag weighs half a pound regardless of how many beans it contains and becomes a nonmagical item when it no longer contains any beans. If

forth. Whenever a toad is touched, it transforms into a Large or smaller monster of the DM’s choice that acts in accordance with its alignment and nature. The monster remains for 1 minute, then

Deck of Illusions

Magic Items Dungeon Master’s Guide

This box contains a set of cards. A full deck has 34 cards: 32 depicting specific creatures and two with a mirrored surface. A deck found as treasure is usually missing 1d20 − 1 cards. The

91–93 Warrior Veteran 94–96 Wyvern 97–00 The card drawer *Stat blocks for these creatures (except the card drawer) appear in the Monster Manual.

Web

Spells Player’s Handbook

You conjure a mass of sticky webbing at a point within range. The webs fill a 20-foot Cube there for the duration. The webs are Difficult Terrain, and the area within them is Lightly Obscured. If

no longer Restrained. The webs are flammable. Any 5-foot Cube of webs exposed to fire burns away in 1 round, dealing 2d4 Fire damage to any creature that starts its turn in the fire.

Elemental Cataclysm

Monsters Monster Manual

). If the cataclysm fails a saving throw, it can choose to succeed instead. Siege Monster. The cataclysm deals double damage to objects and structures.Multiattack. The cataclysm makes two Elemental Burst

successful check, the creature is no longer buried. Success: Half damage only. Control Weather. The cataclysm casts the Control Weather spell, requiring no spell components and using Constitution as the

Teleport

Spells Player’s Handbook

. Teleportation Outcome Familiarity Mishap Similar Area Off Target On Target Permanent circle — — — 01–00 Linked object — — — 01–00

’s sanctum but instead viewed an illusion, or you are attempting to teleport to a location that no longer exists. Mishap. The spell’s unpredictable magic results in a difficult journey

Spellfire Storm

Spells Forgotten Realms: Heroes of Faerûn

You conjure a pillar of spellfire in a 20-foot-radius, 20-foot-high Cylinder centered on a point within range. The area of the Cylinder is Bright Light, and each creature in it when it appears makes

a Constitution saving throw, taking 4d10 Radiant damage on a failed save or half as much damage on a successful one. A creature also makes this save when it enters the spell’s area for the first

Crown of Horns

Magic Items Forgotten Realms: Adventures in Faerûn

The Crown of Horns contains the essence and intelligence of Myrkul, one of the Dead Three. This ghastly crown is a pale silver circlet with four curved bones set around its rim. On the crown's brow

is set a black diamond whose depths swirl with weird, malignant energy. Myrkul created the Crown of Horns at the height of his power. When Myrkul was slain by Mystra, he imbued the crown with his

Earth Elemental Legacy

Monsters Basic Rules (2014)

Earth Glide. The elemental can burrow through nonmagical, unworked earth and stone. While doing so, the elemental doesn't disturb the material it moves through. Siege Monster. The elemental deals

hill, club-like arms of jagged stone swinging at its sides. Its head and body consist of dirt and stone, occasionally set with chunks of metal, gems, and bright minerals.PoisonBludgeoning, Piercing, and Slashing from Nonmagical AttacksThunder

Alarm Legacy

Spells Basic Rules (2014)

You set an alarm against unwanted intrusion. Choose a door, a window, or an area within range that is no larger than a 20-foot cube. Until the spell ends, an alarm alerts you whenever a Tiny or

larger creature touches or enters the warded area. When you cast the spell, you can designate creatures that won't set off the alarm. You also choose whether the alarm is mental or audible. A mental alarm

Bead of Force Legacy

Magic Items Basic Rules (2014)

within the area, are pushed away from the center of the sphere until they are no longer inside it. Only breathable air can pass through the sphere's wall. No attack or other effect can. An enclosed

force then encloses the area for 1 minute. Any creature that failed the save and is completely within the area is trapped inside this sphere. Creatures that succeeded on the save, or are partially

Dust of Corrosion

Magic Items The Wild Beyond the Witchlight

As an action, you can throw this dust into the air, filling a 10-foot cube that extends out from you. Surfaces and objects made of nonmagical ferrous metal in the area instantly corrode and turn to

dust, becoming useless and unsalvageable. Any creature in the area that is made wholly or partly out of ferrous metal must make a DC 13 Constitution saving throw, taking 4d8 necrotic damage on a failed

Magmin Legacy

Monsters Basic Rules (2014)

area are ignited. Ignited Illumination. As a bonus action, the magmin can set itself ablaze or extinguish its flames. While ablaze, the magmin sheds bright light in a 10-foot radius and dim light for

Wurm

Monsters Guildmasters’ Guide to Ravnica

":"force"} force damage. Siege Monster. The wurm deals double damage to objects and structures. Tunneler. The wurm can burrow through solid rock at half its burrow speed and leaves a 10-foot-diameter

Constitution saving throw at the end of that turn or regurgitate all swallowed creatures, which fall prone in a space within 10 feet of the wurm. If the wurm dies, a swallowed creature is no longer restrained by

Dynamite (Stick) Legacy

Equipment

damage by 1d6 (to a maximum of 10d6) and the burst radius by 5 feet (to a maximum of 20 feet). Dynamite can be rigged with a longer fuse to explode after a set amount of time, usually 1 to 6 rounds

. Roll initiative for the dynamite. After the set number of rounds goes by, the dynamite explodes on that initiative.

Sunburst Legacy

Spells Basic Rules (2014)

blinded by this spell makes another Constitution saving throw at the end of each of its turns. On a successful save, it is no longer blinded. This spell dispels any darkness in its area that was created by a spell.

Tower Sage

Monsters Quests from the Infinite Staircase

cone. Each creature in that area must succeed on a DC 13 Constitution saving throw or have the blinded condition until the end of the tower sage’s next turn. Spellcasting. The tower sage casts

elder sage. Tower sages are the only folk capable of reading the Books of Prophecy, an ancient set of tomes that hint at future events of grand significance. Tower Stewards For centuries, the Tower of the Heavens has been stewarded by dutiful folk who practice two distinct traditions.

Runic Colossus

Monsters Bigby Presents: Glory of the Giants

. Siege Monster. The colossus deals double damage to objects and structures.Multiattack. The colossus makes two Slam attacks and then uses Stomp. Slam. Melee Weapon Attack: +14;{"diceNotation":"1d20+14

DC 22 Strength check. On a successful check, the affected creature relocates to an unoccupied space of its choice within 5 feet of the colossus and is no longer restrained. Arcane Beam (Recharge 5–6

Kraken Legacy

Monsters Basic Rules (2014)

feet of movement to escape from nonmagical restraints or being grappled. Siege Monster. The kraken deals double damage to objects and structures.Multiattack. The kraken makes three tentacle attacks

the kraken dies, a swallowed creature is no longer restrained by it and can escape from the corpse using 15 feet of movement, exiting prone. Tentacle. Melee Weapon Attack: +17;{"diceNotation":"1d20+17

Mantrap

Monsters Tomb of Annihilation

each of the target’s turns. If the mantrap dies, the creature inside it is no longer restrained by it. A mantrap can engulf only one creature at a time.Attractive Pollen (1/Day). When the

mantrap detects any creatures nearby, it releases pollen out to a radius of 30 feet. Any beast or humanoid within the area must succeed on a DC 11 Wisdom saving throw or be forced to use all its movement

Hallow Legacy

Spells Basic Rules (2014)

creatures within it. Any creature charmed, frightened, or possessed by such a creature is no longer charmed, frightened, or possessed upon entering the area. You can exclude one or more of those types of

You touch a point and infuse an area around it with holy (or unholy) power. The area can have a radius up to 60 feet, and the spell fails if the radius includes an area already under the effect a

Neothelid

Monsters Mordenkainen Presents: Monsters of the Multiverse

within 10 feet of the neothelid. If the neothelid dies, a swallowed creature is no longer restrained by it and can escape from the corpse by using 20 feet of movement, exiting prone. Acid Breath

(Recharge 5–6);{"diceNotation":"1d6","rollType":"recharge","rollAction":"Acid Breath"}. The neothelid exhales acid in a 60-foot cone. Each creature in that area must make a DC 18 Dexterity saving throw

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

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

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