both becomes diffusing constructs round

Ochre Jelly

Monsters Monster Manual

", "rollType":"damage", "rollAction":"Pseudopod", "rollDamageType":"Acid"} Acid damage.Split. Trigger: While the jelly is Large or Medium and has 10+ Hit Points, it becomes Bloodied or is subjected to

Lightning or Slashing damage. Response: The jelly splits into two new Ochre Jellies. Each new jelly is one size smaller than the original jelly and acts on its Initiative. The original jelly’s Hit Points are divided evenly between the new jellies (round down).Lightning, SlashingAcid

Ammunition of Slaying

Magic Items Dungeon Master’s Guide

creature, the ammunition becomes nonmagical. 1d100 Creature Type 01–10 Aberrations 11–15 Beasts 16–20 Celestials 21–25 Constructs 26

Black Pudding

Monsters Monster Manual

. Trigger: While the pudding is Large or Medium and has 10+ Hit Points, it becomes Bloodied or is subjected to Lightning or Slashing damage. Response: The pudding splits into two new Black Puddings. Each new

pudding is one size smaller than the original pudding and acts on its Initiative. The original pudding’s Hit Points are divided evenly between the new puddings (round down).Acid, Cold, Lightning, Slashing

Pipes of the Sewers

Magic Items Dungeon Master’s Guide

24 hours. On a failed save, the swarm is swayed by the pipes’ music and becomes Friendly to you and your allies for as long as you continue to play the pipes each round as a Magic action. A

Wish

Spells Player’s Handbook

a reroll of any die roll made within the last round (including your last turn). Reality reshapes itself to accommodate the new result. For example, a Wish spell could undo an ally’s failed

cast a spell until you finish a Long Rest, you take 1d10 Necrotic damage per level of that spell. This damage can’t be reduced or prevented in any way. In addition, your Strength score becomes 3

Spare the Dying Legacy

Spells Basic Rules (2014)

You touch a living creature that has 0 hit points. The creature becomes stable. This spell has no effect on undead or constructs.

Feather Token (Feather Fall) (FPW)

magic-items

This small metal disk is inscribed with the image of a feather. When you fall at least 20 feet while the token is on your person, you descend 60 feet per round and take no damage from falling. The

token’s magic is expended after you land, whereupon the disk becomes nonmagical. (Everybody Dies on a Lightning Train)

Feather Token (Feather Fall)

Magic Items Wayfinder's Guide to Eberron

This small metal disk is inscribed with the image of a feather. When you fall at least 20 feet while the token is on your person, you descend 60 feet per round and take no damage from falling. The token’s magic is expended after you land, whereupon the disk becomes nonmagical.

Storm of Vengeance Legacy

Spells Basic Rules (2014)

. Each creature under the cloud takes 2d6 bludgeoning damage. Round 5–10. Gusts and freezing rain assail the area under the cloud. The area becomes difficult terrain and is heavily obscured. Each

(no more than 5,000 feet beneath the cloud) when it appears must make a Constitution saving throw. On a failed save, a creature takes 2d6 thunder damage and becomes deafened for 5 minutes. Each

Giant Insect Legacy

Spells Basic Rules (2014)

spider becomes a giant spider, a wasp becomes a giant wasp, and a scorpion becomes a giant scorpion. Each creature obeys your verbal commands, and in combat, they act on your turn each round. The GM has

You transform up to ten centipedes, three spiders, five wasps, or one scorpion within range into giant versions of their natural forms for the duration. A centipede becomes a giant centipede, a

Beholder Legacy

Monsters Monster Manual (2014)

beholder becomes slimy; that area is difficult terrain until initiative count 20 on the next round. Walls within 120 feet of the beholder sprout grasping appendages until initiative count 20 on the round

minute. The target awakens if it takes damage or another creature takes an action to wake it. This ray has no effect on constructs and undead. Petrification Ray. The targeted creature must make a

Death Tyrant Legacy

Monsters Monster Manual (2014)

and whether the cone is active. Any creature in that area can’t regain hit points. Any humanoid that dies there becomes a zombie under the tyrant’s command. The dead humanoid retains its

asleep and remain unconscious for 1 minute. The target awakens if it takes damage or another creature takes an action to wake it. This ray has no effect on constructs and undead. Petrification Ray

Constructed Commoner

Monsters Candlekeep Mysteries

Unusual Nature. The commoner doesn’t require air, food, drink, or sleep, and it gains no benefit from finishing a short or long rest. When it drops to 0 hit points, it becomes a lifeless

":"Club","rollDamageType":"bludgeoning"} bludgeoning damage.To populate the demiplane without endangering any innocents, the Harpers created constructs out of wooden mannequins to act as villagers. Magic

Elder Oblex Legacy

Monsters Mordenkainen’s Tome of Foes

","rollDamageType":"psychic"} psychic damage and become memory drained until it finishes a short or long rest or until it benefits from the greater restoration or heal spell. Constructs, oozes, plants, and

drained beyond the first, the die size increases by one: the d4 becomes a d6, the d6 becomes a d8, and so on until the die becomes a d20, at which point the target becomes unconscious for 1 hour. The

Adult Oblex Legacy

Monsters Mordenkainen’s Tome of Foes

greater restoration or heal spell. Constructs, oozes, plants, and undead succeed on the save automatically. While memory drained, the target must roll a d4 and subtract the number rolled from any

ability check or attack roll it makes. Each time the target is memory drained beyond the first, the die size increases by one: the d4 becomes a d6, the d6 becomes a d8, and so on until the die becomes a

Memory Web

Monsters Quests from the Infinite Staircase

Intelligence saving throw. Constructs, Oozes, Plants, and Undead succeed on the save automatically. On a failed save, the target takes 5 (2d4);{"diceNotation":"2d4", "rollType":"damage", "rollAction":"Drain

Memories", "rollDamageType":"psychic"} psychic damage and becomes memory drained until it finishes a long rest or the memory web is destroyed. While memory drained, the target must roll a d4

Nagpa Legacy

Monsters Mordenkainen’s Tome of Foes

. On a failed save, the target is charmed by the nagpa until the start of the nagpa's next turn. On a successful save, the target becomes immune to the nagpa's Corruption for the next 24 hours. Paralysis

be paralyzed for 1 minute. A paralyzed target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. Undead and constructs are immune to this effect

Merrenoloth Legacy

Monsters Mordenkainen’s Tome of Foes

at the end of each of its turns, ending the effect on itself on a success.Lair Actions Any ship a merrenoloth is contracted to captain becomes the creature's lair. When fighting on the ship, the

30 feet until initiative count 20 on the next round. The air within 60 feet of the ship is filled with howling wind. Until initiative count 20 on the next round, that area is difficult terrain, and

Elder Oblex (FPW)

monsters

);{"diceNotation":"8d10", "rollType":"damage", "rollAction":"Eat Memories", "rollDamageType":"Psychic"} Psychic damage and the target becomes memory drained until it finishes a Short or Long Rest or until it

benefits from the Greater Restoration or Heal spell. Constructs, Oozes, Plants, and Undead succeed on the save automatically. While memory drained, the target must roll a d4;{"diceNotation":"1d4

Elder Oblex

Monsters Mordenkainen Presents: Monsters of the Multiverse

Memories", "rollDamageType":"psychic"} psychic damage and become memory drained until it finishes a short or long rest or until it benefits from the greater restoration or heal spell. Constructs, Oozes

memory drained beyond the first, the die size increases by one: the d4 becomes a d6, the d6 becomes a d8, and so on until the die becomes a d20, at which point the target becomes unconscious for 1 hour

Adult Time Dragon

Monsters Planescape: Adventures in the Multiverse

succeeds on three of these saves.The dragon can take up to three reactions per round but only one per turn. Reactive Rend. After using Legendary Resistance or in response to being hit by an attack

its Time Breath. Until the weakened effect ends on the target, its speed becomes 0, and its speed can’t increase. Time Slip. The dragon halves the damage it takes from an attack made against it

Phantasmal Force Legacy

Spells Player’s Handbook (2014)

, creature, or other visible phenomenon of your choice that is no larger than a 10-foot cube and that is perceivable only to the target for the duration. This spell has no effect on undead or constructs

. Similarly, a phantasm created to appear as fire, a pool of acid, or lava can burn the target. Each round on your turn, the phantasm can deal 1d6 psychic damage to the target if it is in the phantasm

Ancient Green Dragon Legacy

Monsters Basic Rules (2014)

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

. Furthermore, a creature in the wall’s space must make a DC 15 Dexterity saving throw once each round it’s in contact with the wall, taking 18 (4d8);{"diceNotation":"4d8","rollType":"damage

Adult Green Dragon Legacy

Monsters Basic Rules (2014)

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

, a creature in the wall’s space must make a DC 15 Dexterity saving throw once each round it’s in contact with the wall, taking 18 (4d8);{"diceNotation":"4d8","rollType":"damage

Adult Oblex

Monsters Mordenkainen Presents: Monsters of the Multiverse

", "rollDamageType":"psychic"} psychic damage and become memory drained until it finishes a short or long rest or until it benefits from the greater restoration or heal spell. Constructs, Oozes, Plants, and

drained beyond the first, the die size increases by one: the d4 becomes a d6, the d6 becomes a d8, and so on until the die becomes a d20, at which point the target becomes unconscious for 1 hour. The effect

Pipes of the Sewers Legacy

Magic Items Basic Rules (2014)

it normally would and can't be swayed by the pipes' music for the next 24 hours. If you win the contest, the swarm is swayed by the pipes' music and becomes friendly to you and your companions for as

long as you continue to play the pipes each round as an action. A friendly swarm obeys your commands. If you issue no commands to a friendly swarm, it defends itself but otherwise takes no actions. If

Nagpa

Monsters Mordenkainen Presents: Monsters of the Multiverse

the nagpa until the start of the nagpa’s next turn. On a successful save, the target becomes immune to the nagpa’s Corruption for the next 24 hours. Paralysis (Recharge 6);{"diceNotation

":"1d6","rollType":"recharge","rollAction":"Paralysis"}. The nagpa forces each creature within 30 feet of it to make a DC 20 Wisdom saving throw, excluding Undead and Constructs. On a failed save, a

Lich Legacy

Monsters Basic Rules (2014)

. Everything about a lich’s lair reflects its keen mind and wicked cunning, including the magic and mundane traps that secure it. Undead, constructs, and bound demons lurk in shadowy recesses

, the lich takes half the damage (rounded down), and the target takes the remaining damage. This tether lasts until initiative count 20 on the next round or until the lich or the target is no longer in

Ancient Time Dragon

Monsters Planescape: Adventures in the Multiverse

by the dragon from opening in the rulers’ presence or anywhere within their domains.The dragon can take up to three reactions per round but only one per turn. Reactive Rend. After using

it can see within 90 feet of itself that is weakened by its Time Breath. Until the weakened effect ends on the target, its speed becomes 0, and its speed can’t increase. Time Slip. The dragon

Shield of the Uven Rune

Magic Items Waterdeep: Dungeon of the Mad Mage

items to be within 5 feet of each other. At the end, the shield is destroyed, and the rune is etched or burned into the chosen weapon. This weapon becomes a rare magic item that requires attunement. It

has the properties of a +1 weapon. The bonus increases to +3 when the weapon is used against one of the following creature types, chosen by you at the time of the magic weapon’s creation: aberrations, celestials, constructs, dragons, elementals, fey, fiends, giants, or undead.

Olhydra

Monsters Princes of the Apocalypse

saving throw or be pulled up to 20 feet into the water and knocked prone. Water within 120 feet of Olhydra becomes murky and opaque until initiative count 20 of the next round. A creature with

round. Creatures and objects within or beyond the fog are heavily obscured. A creature that enters the freezing cloud for the first time on a turn or starts its turn there takes 10 (3d6);{"diceNotation

Kraken Legacy

Monsters Basic Rules (2014)

is pushed 10 feet away 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 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

Demogorgon

Monsters Mordenkainen Presents: Monsters of the Multiverse

initiative count 20 of the next round. Illusory Duplicate. Demogorgon creates an illusory duplicate of himself, which appears in his space and lasts until initiative count 20 of the next round. On his turn

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

Arcturia

Monsters Waterdeep: Dungeon of the Mad Mage

and traps. Everything about a lich’s lair reflects its keen mind and wicked cunning, including the magic and mundane traps that secure it. Undead, constructs, and bound demons lurk in shadowy

takes the remaining damage. This tether lasts until initiative count 20 on the next round or until the lich or the target is no longer in the lich’s lair. The lich calls forth the spirits of

Lorthuun

Monsters Out of the Abyss

ties), the beholder can take one lair action to cause one of the following effects: A 50-foot square area of ground within 120 feet of the beholder becomes slimy; that area is difficult terrain until

initiative count 20 on the next round. Walls within 120 feet of the beholder sprout grasping appendages until initiative count 20 on the round after next. Each creature of the beholder's choice that

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