more some with only area first for least

Ball Bearings

Equipment

As a Utilize action, you can spill Ball Bearings from their pouch. They spread to cover a level, 10-foot-square area within 10 feet of yourself. A creature that enters this area for the first time on

Caltrops

Equipment

As a Utilize action, you can spread Caltrops from their bag to cover a 5-foot-square area within 5 feet of yourself. A creature that enters this area for the first time on a turn must succeed on a DC

Fire Storm

Spells Player’s Handbook

A storm of fire appears within range. The area of the storm consists of up to ten 10-foot Cube;Cubes, which you arrange as you like. Each Cube must be contiguous with at least one other Cube. Each

creature in the area makes a Dexterity saving throw, taking 7d10 Fire damage on a failed save or half as much damage on a successful one. Flammable objects in the area that aren’t being worn or carried start burning.

Helm of Brilliance

Magic Items Dungeon Master’s Guide

. 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

Emanation is filled with Dim Light. Any Undead that starts its turn in that area takes 1d6 Radiant damage. Fire Opal Flames. As long as the helm has at least one fire opal, you can take a Magic action

Control Water

Spells Player’s Handbook

chose until the spell ends or you choose a different effect. Whirlpool. You cause a whirlpool to form in the center of the area, which must be at least 50 feet square and 25 feet deep. The whirlpool

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

Sleet Storm

Spells Player’s Handbook

Until the spell ends, sleet falls in a 40-foot-tall, 20-foot-radius Cylinder centered on a point you choose within range. The area is Heavily Obscured, and exposed flames in the area are doused

. Ground in the Cylinder is Difficult Terrain. When a creature enters the Cylinder for the first time on a turn or starts its turn there, it must succeed on a Dexterity saving throw or have the Prone condition and lose Concentration.

Rope of Climbing

Magic Items Dungeon Master’s Guide

you choose, up to the rope’s length away from you. That end moves 10 feet on your turn when you first command it and 10 feet at the start of each of your subsequent turns until reaching its

rope has AC 20, HP 20, and Immunity to Poison and Psychic damage. It regains 1 Hit Point every 5 minutes as long as it has at least 1 Hit Point. If the rope drops to 0 Hit Points, it is destroyed.

Gnoll Demoniac

Monsters Monster Manual

or until the gnoll’s Concentration ends on it. This area is Difficult Terrain. Dexterity Saving Throw: DC 14, any creature that starts its turn in this area or enters it for the first time on a

Forbiddance

Spells Player’s Handbook

following: Aberrations, Celestials, Elementals, Fey, Fiends, and Undead. When a creature of a chosen type enters the spell’s area for the first time on a turn or ends its turn there, the creature

You create a ward against magical travel that protects up to 40,000 square feet of floor space to a height of 30 feet above the floor. For the duration, creatures can’t teleport into the area

Forcecage

Spells Player’s Handbook

An immobile, Invisible, Cube-shaped prison composed of magical force springs into existence around an area you choose within range. The prison can be a cage or a solid box, as you choose. A prison

barrier that prevents any matter from passing through it and blocking any spells cast into or out from the area. When you cast the spell, any creature that is completely inside the cage’s area is

Jallarzi's Storm of Radiance

Spells Player’s Handbook

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 time on a turn or ends its turn there. A

You unleash a storm of flashing light and raging thunder in a 10-foot-radius, 40-foot-high Cylinder centered on a point you can see within range. While in this area, creatures have the Blinded and

Insect Plague

Spells Player’s Handbook

the spell’s area for the first time on a turn or ends its turn there. A creature makes this save only once per turn. Using a Higher-Level Spell Slot. The damage increases by 1d10 for each spell slot level above 5.

Swarming locusts fill a 20-foot-radius Sphere centered on a point you choose within range. The Sphere remains for the duration, and its area is Lightly Obscured and Difficult Terrain. When the swarm

Zone of Truth

Spells Player’s Handbook

You create a magical zone that guards against deception in a 15-foot-radius Sphere centered on a point within range. Until the spell ends, a creature that enters the spell’s area for the first

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

turn. Webs layered over a flat surface have a depth of 5 feet. The first time a creature enters the webs on a turn or starts its turn there, it must succeed on a Dexterity saving throw or have the

Wall of Fire

Spells Player’s Handbook

foot thick. The wall is opaque and lasts for the duration. When the wall appears, each creature in its area makes a Dexterity saving throw, taking 5d8 Fire damage on a failed save or half as much

creature takes the same damage when it enters the wall for the first time on a turn or ends its turn there. The other side of the wall deals no damage. Using a Higher-Level Spell Slot. The damage increases by 1d8 for each spell slot level above 4.

Wall of Thorns

Spells Player’s Handbook

feet high, and 5 feet thick or a circle that has a 20-foot diameter and is up to 20 feet high and 5 feet thick. The wall blocks line of sight. When the wall appears, each creature in its area makes a

creature moves through the wall, it must spend 4 feet of movement. Furthermore, the first time a creature enters a space in the wall on a turn or ends its turn there, the creature makes a Dexterity

Beholder

Monsters Monster Manual

. First Failure: The target has the Restrained condition and repeats the save at the end of its next turn if it is still Restrained, ending the effect on itself on a success. Second Failure: The target

150-foot Cone. Until the start of the beholder’s next turn, that area acts as an Antimagic Field spell, and that area works against the beholder’s own Eye Rays.

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

minutes, after which time the spell ends. Each creature in the Sphere when the glyph activates is targeted by its effect, as is a creature that enters the Sphere for the first time on a turn or ends

Death Tyrant

Monsters Monster Manual

. Constitution Saving Throw: DC 17. First Failure: The target has the Restrained condition and repeats the save at the end of its next turn if it is still Restrained, ending the effect on itself on a success

imperceptible, magical wave of negative energy in a 150-foot Cone. Creatures in that area can’t regain Hit Points until the start of the death tyrant’s next turn. An intact Humanoid corpse

Demonomicon of Iggwilv

Magic Items Dungeon Master’s Guide

) check related to the Abyss. When you do so, you gain Advantage on the check. Containment. The first ten pages of the Demonomicon are blank. As a Magic action while holding the book, you can target a

Fiend that you can see that is trapped within the area of a Magic Circle spell. The Fiend must succeed on a DC 20 Charisma saving throw with Disadvantage or become trapped within one of the Demonomicon

Demogorgon Spawn

Monsters Stranger Things: Welcome to the Hellfire Club

Baleful Presence. Sources of light in a 60-foot Emanation originating from the spawn flicker wildly. Nonmagical sources of Bright Light in that area instead shed Dim Light. Regeneration. The spawn

regains 5 Hit Points at the start of each of its turns if it has at least 1 Hit Point. Running Leap. With a 10-foot running start, the spawn can Long Jump up to 30 feet.Multiattack. The spawn

Demodragon

Monsters Stranger Things: Welcome to the Hellfire Club

Baleful Presence. Sources of light in a 120-foot Emanation originating from the demodragon flicker wildly. Nonmagical sources of Bright Light in that area instead shed Dim Light. Regeneration. The

demodragon regains 10 Hit Points at the start of each of its turns if it has at least 1 Hit PointMultiattack. The demodragon makes two Bite attacks. Bite. Melee Attack Roll: +7;{"diceNotation":"1d20

Spellfire Storm

Spells Forgotten Realms: Heroes of Faerûn

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

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

Nimblewright Steed