back book diffusing check rules

Book of Vile Darkness

Magic Items Dungeon Master’s Guide

cast that spell again from it until the next dawn. Vile Lore. You can reference the Book of Vile Darkness whenever you make an Intelligence check to recall information about some aspect of evil, such as

lore about demons. When you do so, you have Advantage on that check. At the DM’s discretion, the book might reveal secrets no mortal should know, such as the true names of powerful Fiends

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

. The tome recounts both the oldest and most current profanities of the Abyss and demons. Demons have attempted to censor the text, and while sections have been ripped from the book’s spine, the

Yochlol

Monsters Monster Manual

Advantage on saving throws against spells and other magical effects. Spider Climb. The yochlol can climb difficult surfaces, including along ceilings, without needing to make an ability check. Web

-Shift. The yochlol shape-shifting;shape-shifts into a Medium Humanoid or a Medium spider or back into its true form. Its game statistics are the same in each form. Any equipment it is wearing or carrying isn’t transformed.

Energy Bow

Magic Items Dungeon Master’s Guide

You gain a +1 bonus to attack rolls and damage rolls made with this magic weapon, which has no string. Each time you pull your arm back in a firing motion, a magical arrow made of golden energy

condition for 1 minute. As an action, a creature Restrained by an arrow can make a DC 20 Strength (Athletics) check to try to break the restraint, ending the effect on itself on a successful check

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

Glyph of Warding

Spells Player’s Handbook

You inscribe a glyph that later unleashes a magical effect. You inscribe it either on a surface (such as a table or a section of floor) or within an object that can be closed (such as a book or chest

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

Warlock

Classes Player’s Handbook

Armor, Sickle, 2 Dagger;Daggers, orb;Arcane Focus (orb), Book (occult lore), Scholar's Pack, and 15 GP; or (B) 100 GP Warlocks quest for knowledge that lies hidden in the fabric of the

level 1 features, which are listed in the Warlock Features table. See the multiclassing rules to determine your available spell slots. Warlock Features Level Proficiency Bonus Class Features

Apparatus of Kwalish

Magic Items Dungeon Master’s Guide

This item first appears to be a sealed iron barrel weighing 500 pounds. The barrel has a hidden catch, which can be found with a successful DC 20 Intelligence (Investigation) check. Releasing the

the apparatus’s levers up or down. After each use, a lever goes back to its neutral position. Each lever, from left to right, functions as shown in the Apparatus of Kwalish Levers table

Jacko

Monsters Heroes of the Borderlands

Jacko’s appearance can make a DC 13 Intelligence (Investigation) check, discerning his disguise on a successful check.Multiattack. Jacko makes two Poison Dagger attacks. Poison Dagger. Melee or

customers parrot his cheesy slogan: “Jacko always has your back-o.”Cunning Action. Jacko takes the Dash, Disengage, or Hide action.

Aranea

Monsters Forgotten Realms: Adventures in Faerûn

Spider Climb (Hybrid or Spider Form Only). The aranea can climb difficult surfaces, including along ceilings, without needing to make an ability check. Web Walker. The aranea ignores movement

humanoid-spider hybrid form, or back into its true spider form. Its game statistics are the same in each form, except where noted. Any equipment it is wearing or carrying isn’t transformed.

Animated Chained Library

Monsters Candlekeep Mysteries

succeed on a DC 15 Wisdom (Perception) check to discern that the library is animate.Multiattack. The library makes two attacks. Chained Book. Melee Weapon Attack: +4;{"diceNotation":"1d20+4","rollType

":"to hit","rollAction":"Chained Book"} to hit, reach 5 ft., one target. Hit: 6 (1d8 + 2);{"diceNotation":"1d8+2","rollType":"damage","rollAction":"Chained Book","rollDamageType":"bludgeoning

Swarm of Animated Books

Monsters Candlekeep Mysteries

succeed on a DC 15 Wisdom (Perception) check to discern that the swarm is animate. Swarm. The swarm can occupy another creature’s space and vice versa, and the swarm can move through any opening

","rollType":"to hit","rollAction":"Book Club"} to hit, reach 0 ft., one target in the swarm’s space. Hit: 6 (2d4 + 1);{"diceNotation":"2d4+1","rollType":"damage","rollAction":"Book Club","rollDamageType

Book of Vile Darkness Legacy

Magic Items Dungeon Master’s Guide (2014)

can’t use this property again until the next dawn. Dark Lore. You can reference the Book of Vile Darkness whenever you make an Intelligence check to recall information about some aspect of evil

, such as lore about demons. When you do so, double your proficiency bonus on that check. Dark Speech. While you carry the Book of Vile Darkness and are attuned to it, you can use an action to recite

Crog's Guide to Disarming Magic Traps

Equipment

This book describes various mundane techniques and theories related to foiling magic traps. If you spend 48 hours studying this book, you learn how to overcome certain types of magic traps with your

thieves’ tools. If a trap’s magic can be dispelled or suppressed by a dispel magic spell, you can make a Dexterity check using thieves’ tools to achieve the same result. The DC of

Book of Vile Darkness (Variant)

Magic Items Keys from the Golden Vault

property again until the next dawn. Dark Lore. You can reference the Book of Vile Darkness whenever you make an Intelligence check to recall information about some aspect of evil, such as lore about

demons. When you do so, double your proficiency bonus on that check. Dark Speech. While you carry the Book of Vile Darkness and are attuned to it, you can use an action to recite words from its pages in a

Duplicitous Manuscript

Magic Items Tasha’s Cauldron of Everything

book. The new spell must be of the illusion school. When a creature you can see makes an Intelligence (Investigation) check to discern the true nature of an illusion spell you cast, or makes a saving

To you, this book is a magical spellbook. To anyone else, the book appears to be a volume of verbose romance fiction. As an action, you can change the book’s appearance and alter the plot of

Leprechaun

Monsters Quests from the Infinite Staircase

, Phantasmal Force 1/day each: Fabricate (as an action), MisleadAstonishing Luck. When the leprechaun fails an ability check, an attack roll, or a saving throw, it can roll a new d20 and choose which

roll to use, potentially turning the failure into a success.Leprechauns are manifestations of the Feywild rules of hospitality and reciprocity. These rules infuse leprechauns with a deep connection to

Battle Master's Compendium

Equipment

Written by Bloodlord Varrox, Battle Master’s Compendium is a military treatise. Each of its thirteen chapters covers a different skill related to military strategy and tactics. The book’s

detailed analysis covers military units, weapons, strategy, rank, discipline, and much more. When you study a chapter in the book for 1 hour during a short or long rest, you learn interesting

Nass Lantomir's Ghost

Monsters Icewind Dale: Rime of the Frostmaiden

and headed toward the Sea of Moving Ice, hoping to find a tome called The Codicil of White, a book of magic and lore composed by servants of Auril the Frostmaiden. The Arcane Brotherhood believes that

this book tells how to reach a lost city of magic entombed in the ice. Before she could obtain the book, Nass perished. She now exists as a ghost, unable to rest until she finds the book. Characters

Gnoll Witherling

Monsters Mordenkainen Presents: Monsters of the Multiverse

against each other, perhaps to determine who rules a war band or because of extreme starvation. Even under ordinary circumstances, gnolls that are deprived of victims for too long struggle to control

the remains back to a semblance of life in the form of a gnoll witherling. Witherlings travel with their comrades and try to kill anything in their path. They don’t eat and aren’t motivated

Fraternity of Order Law Bender

Monsters Planescape: Adventures in the Multiverse

armor, mage hand, prestidigitationProbability Loophole (3/Day). When the law bender or a creature it can see makes an attack roll, a saving throw, or an ability check, the law bender can cause the roll

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

Cultist (Knights of the Black Sword)

Monsters Icewind Dale: Rime of the Frostmaiden

Levistus, the archdevil who rules Stygia, the sixth layer of the Nine Hells, from the confines of an ice prison from which he cannot escape. Most of the cultists are Icewind Dale natives who would

-shaped amulet of chardalyn. Each of these amulets has an inner radiance that provides warmth and aid, protecting its wearer against the cold while guiding them safely back to civilization. Once its

Gingwatzim

Monsters Candlekeep Mysteries

as a book, dagger, or gemstone) that its creator is carrying or wearing when the gingwatzim is conjured. The other form can be any Tiny beast. Once these alternate forms are chosen, they can’t

-diameter sphere of luminous ectoplasm—into one of its two alternate forms, or from one of those forms back into its true form. In object form, it can’t move or make attacks but otherwise retains

Wereraven

Monsters Curse of Strahd

successful DC 10 Wisdom (Insight) check. Regeneration. The wereraven regains 10 hit points at the start of its turn. If the wereraven takes damage from a silvered weapon or a spell, this trait

wereraven polymorphs into a raven–humanoid hybrid or into a raven, or back into its humanoid form. Its statistics, other than its size and speed, are the same in each form. Any equipment it is wearing

Gelatinous Cube (Giant Ooze variant)

Monsters Waterdeep: Dungeon of the Mad Mage

check, and the creature making the attempt takes 10 (3d6);{"diceNotation":"3d6","rollType":"damage","rollDamageType":"acid"} acid damage. The cube can hold up to nine Large creatures or up to thirty-six

Medium or smaller creatures inside it at a time. When the cube shrinks back to normal size, any creatures that it can no longer contain are expelled into unoccupied spaces around it. Transparent. Even

Gelatinous Cube Legacy

Monsters Basic Rules (2014)

check, and the creature making the attempt takes 10 (3d6);{"diceNotation":"3d6","rollType":"damage","rollDamageType":"acid"} acid damage. The cube can hold only one Large creature or up to four Medium

or smaller creatures inside it at a time. Transparent. Even when the cube is in plain sight, it takes a successful DC 15 Wisdom (Perception) check to spot a cube that has neither moved nor attacked

Demonomicon of Iggwilv Legacy

Magic Items Tasha’s Cauldron of Everything

do so, you can add double your proficiency bonus to the check. Fiendish Scourging. Your magic causes pain to fiends. While carrying the book, when you make a damage roll for a spell you cast against

recounts both the oldest and most current profanities of the Abyss and demons. Demons have attempted to censor the text, and while sections have been ripped from the book’s spine, the general

Phase Spider Legacy

Monsters Basic Rules (2014)

upside down on ceilings, without needing to make an ability check. Web Walker. The spider ignores movement restrictions caused by webbing.Bite. Melee Weapon Attack: +4;{"diceNotation":"1d20+4","rollType

poisoned in this way.A phase spider possesses the magical ability to phase in and out of the Ethereal Plane. It seems to appear out of nowhere and quickly vanishes after attacking. Its movement on the Ethereal Plane before coming back to the Material Plane makes it seem like it can teleport.

Cult Fanatic (Knights of the Black Sword)

Monsters Icewind Dale: Rime of the Frostmaiden

","rollDamageType":"piercing"} piercing damage.The Knights of the Black Sword are a secret society of cultists devoted to Levistus, the archdevil who rules Stygia, the sixth layer of the Nine Hells, from the

warmth and aid, protecting its wearer against the cold while guiding them safely back to civilization. Once its wearer reaches Ten-Towns, the talisman loses its inner radiance, yet the cultists keep their

Cursed Luckstone

Magic Items Ghosts of Saltmarsh

This flat, gray-and-black river stone is inscribed with an unknown arcane symbol and feels cool to the touch. While carrying the stone, you can gain advantage on one ability check of your choice. The

remain cursed, you cannot discard the stone, which immediately teleports back into your pocket or pack. After you use the stone’s magic, your next two ability checks are made with disadvantage.

Glabbagool

Monsters Out of the Abyss

check, and the creature making the attempt takes 10 (3d6);{"diceNotation":"3d6","rollType":"damage","rollDamageType":"acid"} acid damage. The cube can hold only one Large creature or up to four Medium or

smaller creatures inside it at a time. Transparent. Even when the cube is in plain sight, it takes a successful DC 15 Wisdom (Perception) check to spot a cube that has neither moved nor attacked. A

Project Image Legacy

Spells Basic Rules (2014)

, you can switch from using its senses to using your own, or back again. While you are using its senses, you are blinded and deafened in regard to your own surroundings. Physical interaction with the

(Investigation) check against your spell save DC. If a creature discerns the illusion for what it is, the creature can see through the image, and any noise it makes sounds hollow to the creature.

Ruin Spider

Monsters The Book of Many Things

ceilings, without needing to make an ability check. Web Sense. While in contact with a web, the spider knows the exact location of any other creature in contact with the same web. Web Walker. The

the restrained condition. As an action, a restrained target can make a DC 13 Strength check, bursting the webbing on a successful check. The webbing can also be destroyed (AC 10; 5 hit points

Treant Sapling

Monsters The Wild Beyond the Witchlight

succeed on a DC 18 Intelligence (Investigation) check to discern that the treant is animate.Multiattack. The treant makes two Slam attacks. Slam. Melee Weapon Attack: +5;{"diceNotation":"1d20+5

dies, until the treant dies or is more than 120 feet from the tree, or until the treant takes a bonus action to turn it back into an inanimate tree. The tree then takes root if possible.Bludgeoning, PiercingFire

Yochlol Legacy

Monsters Monster Manual (2014)

Shapechanger. The yochlol can use its action to polymorph into a form that resembles a female drow or giant spider, or back into its true form. Its statistics are the same in each form. Any equipment

. Spider Climb. The yochlol can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check. Innate Spellcasting. The yochlol’s spellcasting ability is

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