before bad diffusing causes rating

Merregon Legacy

Monsters Mordenkainen’s Tome of Foes

merregon makes two halberd attacks, or if an allied fiend of challenge rating 6 or higher is within 60 feet of it, the merregon makes three halberd attacks. Halberd. Melee Weapon Attack: +6;{"diceNotation

, the merregon causes itself to be hit instead.Fire, PoisonCold; Bludgeoning, Piercing, and Slashing from Nonmagical Attacks that aren't Silvered

Staff of the Forgotten One

Magic Items Tomb of Annihilation

(History) checks is doubled. You can’t be blinded, charmed, deafened, frightened, petrified, or stunned. Undead with a challenge rating of 2 or lower will neither threaten nor attack you unless

destroys both the staff and the life force trapped within it. The staff doesn’t explode if destroyed in this manner, but its destruction causes the sphere to be destroyed as well.

Hythonia

Monsters Mythic Odysseys of Theros

up to her speed without provoking opportunity attacks. Snaky Hair. Hythonia makes one attack with her snaky hair. Petrified Earth (Costs 2 Actions). Hythonia causes stone spikes to erupt from the

medusa rising up anew, the last of her shed skin dropping away, revealing glistening, unscarred scales. Fighting Hythonia as a mythic encounter is equivalent to taking on two challenge rating 17

Fraz-Urb'luu Legacy

Monsters Out of the Abyss

hooks. Corkscrew towers loom above twisted domes and vast amphitheaters, just a few examples of the impossible architecture that fills the city. The challenge rating of Fraz-Urb’luu is 24

’t use the same effect two rounds in a row: Fraz-Urb’luu causes up to 5 doors within the lair to become walls, and an equal number of doors to appear on walls where there previously were

Yeenoghu

Monsters Mordenkainen Presents: Monsters of the Multiverse

), and there are few structures or signs of civilization on his layer of the Abyss. The challenge rating of Yeenoghu is 25 (75,000 XP) when he’s encountered in his lair. Lair Actions On

. Yeenoghu causes an iron spike—5 feet tall and 1 inch in diameter—to burst from the ground at a point he can see within 100 feet of him. Any creature in the space where the spike emerges

Fraz-Urb'luu

Monsters Mordenkainen Presents: Monsters of the Multiverse

topped with razors and hooks. Corkscrew towers loom above twisted domes and vast amphitheaters, forming a surreal and disorienting cityscape. The challenge rating of Fraz-Urb’luu is 24 (62,000

’t use the same effect two rounds in a row: Conjure Walls and Doors. Fraz-Urb’luu causes up to five doors within the lair to become walls and an equal number of doors to appear on walls where

Arasta

Monsters Mythic Odysseys of Theros

attack with her claws. Swarm (Costs 2 Actions). Arasta causes two Swarm of Insects (Spiders) ;swarms of spiders (see the Monster Manual) to appear in unoccupied spaces within 5 feet of her. Toxic Web

encounter is equivalent to taking on two challenge rating 21 creatures in one encounter. Award a party 66,000 XP for defeating Arasta after she uses Armor of Spiders.Arasta’s Lair Arasta lives

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

highest challenge rating within the book can attempt to possess you. You must make a DC 20 Charisma saving throw. On a failure, you are possessed by the creature, which controls you like a puppet. The

Ancient Deep Dragon Legacy

Monsters Fizban's Treasury of Dragons

-gray hide is smooth like a salamander’s, and their eyes are pale. As they age, their spore breath causes fungi to bloom across their skin, especially around the head and neck. Their wings are

mushrooms and plants in neatly organized displays. The challenge rating of a legendary deep dragon increases by 1 when it’s encountered in its lair. Lair Actions On initiative count 20 (losing

Adult Deep Dragon Legacy

Monsters Fizban's Treasury of Dragons

-and-gray hide is smooth like a salamander’s, and their eyes are pale. As they age, their spore breath causes fungi to bloom across their skin, especially around the head and neck. Their wings are

, or featuring larger mushrooms and plants in neatly organized displays. The challenge rating of a legendary deep dragon increases by 1 when it’s encountered in its lair. Lair Actions On

Merregon

Compendium - Sources->Dungeons & Dragons->Baldur's Gate: Descent into Avernus

attacks, or if an allied fiend of challenge rating 6 or higher is within 60 feet of it, the merregon makes three halberd attacks. Halberd. Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit

: 9 (1d10 + 4) slashing damage. Heavy Crossbow. Ranged Weapon Attack: +4 to hit, range 100/400 ft., one target. Hit: 7 (1d10 + 2) piercing damage. Reactions Loyal Bodyguard. When another fiend within 5 feet of the merregon is hit by an attack, the merregon causes itself to be hit instead.

Observatory Locations

Compendium - Sources->Dungeons & Dragons->The Book of Many Things

challenge rating of monsters encountered around the observatory: Alien Hot Spot. The observatory is an alluring destination for alien stargazers. Extraterrestrial Aberrations are much more likely to

. The observatory and structures within 6 miles of the observatory never erode or degrade from natural causes.

12. Burket's Guard Post

Compendium - Sources->Dungeons & Dragons->Tales from the Yawning Portal->a4

enters. Snarla is a werewolf, her Intelligence is 16 (+3), and she has the following additional feature, which increases her challenge rating to 5 (1,800 XP): Spellcasting. Snarla is a 6th-level

Snarla finds herself in a bad situation, she changes into werewolf form and attacks with desperate savagery, giving her advantage on all her attack rolls. If she is captured alive and made to talk, she

39. Chamber of the Second Sun

Compendium - Sources->Dungeons & Dragons->Tales from the Yawning Portal->a3

is strewn with rubble, so it is difficult terrain. Larger rubble piles are 1 to 4 feet high. Any loud noise (such as an explosion, shouting, or fighting) causes a minor cave-in: at the start of each

Constrict attack. This ability increases its challenge rating to 3 (700 XP). If the snake is slain, the four baboons leap through the hole in the ceiling and down upon the party. (They remained outside the

Merregon

Compendium - Sources->Dungeons & Dragons->Mordenkainen's Tome of Foes

Resistance. The merregon has advantage on saving throws against spells and other magical effects. Actions Multiattack. The merregon makes two halberd attacks, or if an allied fiend of challenge rating 6

. Ranged Weapon Attack: +4 to hit, range 100/400 ft., one target. Hit: 7 (1d10 + 2) piercing damage. Reactions Loyal Bodyguard. When another fiend within 5 feet of the merregon is hit by an attack, the merregon causes itself to be hit instead.

24. Potion Brewery

Compendium - Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage

the brewing of potions. A wooden ladder on rollers is attached to a rail mounted above the shelves. This demilich is all that remains of Branta Myntion, a wizard who fell in with a bad crowd. Her

magic on the cauldron causes it to fall; casting the spell on the fire extinguishes it. Elixir of Timelessness. The cauldron contains twenty doses of a hot, oily black elixir that has grains of sand

Fraz-Urb'luu's Lair

Compendium - Sources->Dungeons & Dragons->Mordenkainen's Tome of Foes

. The challenge rating of Fraz-Urb’luu is 24 (62,000 XP) when he’s encountered in his lair. Lair Actions On initiative count 20 (losing initiative ties), Fraz-Urb’luu can take a lair action to cause one

of the following effects; he can’t use the same effect two rounds in a row: Fraz-Urb’luu causes up to five doors within the lair to become walls, and an equal number of doors to appear on walls where

Fraz-Urb'luu's Lair

Compendium - Sources->Dungeons & Dragons->Out of the Abyss

that fills the city. The challenge rating of Fraz-Urb’luu is 24 (62,000 XP) when he’s encountered in his lair. Lair Actions On initiative count 20 (losing initiative ties), Fraz-Urb’luu can take a lair

action to cause one of the following effects; he can’t use the same effect two rounds in a row: Fraz-Urb’luu causes up to 5 doors within the lair to become walls, and an equal number of doors to appear

24. Children's Bedroom

Compendium - Sources->Dungeons & Dragons->Van Richten’s Guide to Ravenloft

dress with a veiled hat stares at you from where it sways in a wooden rocking chair. The skeleton is all that remains of Theodora Halvhrest. It is not undead, but a blessing laid upon this room causes

the room and keep out the “hungry things.” The hungry things are bad spirits that took over. They “stole” the children’s parents. The children don’t know any named spirits. They would like to leave

Dealing with the Companion

Compendium - Sources->Dungeons & Dragons->Baldur's Gate: Descent into Avernus

causes its upper hemisphere to open, freeing the planetar within. Shattering the Companion The Sword of Zariel has the power to shatter the Companion and dispel the darkness around it. Striking the orb

with the sword causes the Companion to ring like a bell and then shatter, sounding out an angelic tone that can be heard with perfect clarity across the infinite breadth of Avernus. Unless the sword is

Hags

Compendium - Sources->Dungeons & Dragons->Volo's Guide to Monsters

place, and gives it an iron token that it can use to confide in her. Over time, “Granny” convinces the child that it’s okay to have bad thoughts and do bad deeds — starting with breaking things or

wandering outside without permission, then graduating to pushing someone down the stairs or setting a house on fire. Sooner or later, the child’s family and community become terrified of the “bad seed” and

11. Frulam Mondath's Chamber

Compendium - Sources->Dungeons & Dragons->Hoard of the Dragon Queen

ladder is fixed in the chute for climbing up and down, but nothing marks the position of the open, 3-foot-wide hole when it is covered by rugs. The slight depression it causes in the rug can be

Naerytar. Rezmir allowed us to keep some pearls, a ring, and a handful of small stones.” Other papers are of less interest; most of them have bad poetry about dragons. The smaller chamber off the main one

13. The Metal Mage

Compendium - Sources->Dungeons & Dragons->Waterdeep: Dungeon of the Mad Mage

spirit is bound within the golem, Trobriand has a challenge rating of 22 (41,000 XP) and the statistics of an iron golem, with these changes: Trobriand has an Intelligence of 20. He has the

one or more of the pillars, destroying the golem, or forcing the golem out of the room causes Trobriand’s spirit to vacate the golem and attempt to reunite with his normal body, which is hidden in area

Simple Traps

Compendium - Sources->Dungeons & Dragons->Xanathar's Guide to Everything

the trigger and the activity that causes the trap to activate. Effect. A trap’s effect occurs after it activates. The trap might fire a dart, unleash a cloud of poison gas, cause a hidden enclosure to

sown with too many traps, and if the characters are victimized over and over again as a result, they are likely to take steps to prevent further bad things from happening. Because of their recent

11. Frulam Mondath's Chamber

Compendium - Sources->Dungeons & Dragons->Tyranny of Dragons

fixed in the chute for climbing up and down, but nothing marks the position of the open, 3-foot-wide hole when it is covered by rugs. The slight depression it causes in the rug can be noticed with a

. Rezmir allowed us to keep some pearls, a ring, and a handful of small stones.” Other papers are of less interest; most of them have bad poetry about dragons. The smaller chamber off the main one contains

Life in the Styes

Compendium - Sources->Dungeons & Dragons->Ghosts of Saltmarsh

, blood and offal from butchers, lye and fur from tanners, and indescribable chemical mixtures from alchemists. In the eastern portion of the Styes, the pollution is so bad that the river’s flow has been

no exception. Anyone who visits the Styes is exposed to a disease known as redface. This affliction causes itching and painful inflammation all over the face, and especially around the eyes. The

NPCs as Party Members

Compendium - Sources->Dungeons & Dragons->Dungeon Master’s Guide

motivations. When you choose a stat block from the Monster Manual for an NPC party member, make sure the NPC doesn’t overshadow the player characters. Use a stat block whose Challenge Rating is no

to complain humorously about the characters’ terrible choices and bad planning. You can occasionally use this NPC to suggest legitimate courses of action or share insights. Dutiful Assistant. A dutiful

M2. Amphitheater

Compendium - Sources->Dungeons & Dragons->The Wild Beyond the Witchlight

evening sky during a royal wedding. The light grows bigger and causes lively discussion between the revelers. It turns out to be a comet that crashes into the wedding, killing everyone. 2 Lament of a

punishment for being “bad parents.” Ever since then, they have been shunned by their peers (see the “Shadowless” sidebar earlier in the chapter). The characters might have encountered the goblins’ detached

Geryon

Compendium - Sources->Dungeons & Dragons->Monsters of the Multiverse

oaths of vengeance against Asmodeus and hatching schemes to reclaim his standing from Levistus. The challenge rating of Geryon is 23 (50,000 XP) when he’s encountered in his lair. Lair Actions On

Blast. Geryon causes a blast of cold to burst from the ground at a point he can see within 120 feet of him. The cold fills a cube, 10 feet on each side, centered on that point. Each creature in that

Demonomicon of Iggwilv

Compendium - Sources->Dungeons & Dragons->Tasha’s Cauldron of Everything

information about demons or a Wisdom (Survival) check related to the Abyss. When you do so, you can add double your proficiency bonus to the check. Fiendish Scourging. Your magic causes pain to fiends. While

plane of existence, the trapped creature of the highest challenge rating within the book can attempt to possess you. You must make a DC 20 Charisma saving throw. On a failure, you are possessed by

Fraz-Urb'luu

Compendium - Sources->Dungeons & Dragons->Monsters of the Multiverse

. The challenge rating of Fraz-Urb’luu is 24 (62,000 XP) when he’s encountered in his lair. Lair Actions On initiative count 20 (losing initiative ties), Fraz-Urb’luu can take one of the following lair

actions when in his lair; he can’t take the same lair action two rounds in a row: Conjure Walls and Doors. Fraz-Urb’luu causes up to five doors within the lair to become walls and an equal number of

Mournland Environment

Compendium - Sources->Dungeons & Dragons->Eberron: Rising from the Last War

navigation weren’t bad enough, explorers must bring their own provisions into the Mournland, unless they want to risk the danger of ingesting tainted food and water. Terrain Features The Day of

mutations on this table might increase a creature’s challenge rating by 1 or 2. Use the guidelines in chapter 9 of the Dungeon Master’s Guide to determine whether its challenge rating should increase and

Hythonia the Cruel

Compendium - Sources->Dungeons & Dragons->Mythic Odysseys of Theros

smaller creature takes this damage, it is also grappled (escape DC 15). Hythonia causes spectral snakes to erupt from a point she can see within 150 feet of her. Each creature within 20 feet of that point

makes one attack with her snaky hair. Petrified Earth (Costs 2 Actions). Hythonia causes stone spikes to erupt from the ground in a 30-foot radius centered on her. The area becomes difficult terrain

Lulu the Hollyphant

Compendium - Sources->Dungeons & Dragons->Baldur's Gate: Descent into Avernus

Lulu the Hollyphant Lulu is a hollyphant (see Appendix C for her stat block) who has lost most of her memories, as well as her Innate Spellcasting trait. (This has no effect on her challenge rating

deep down inside her still.” Restored Memories Friendship is important to Lulu in ways both physical and spiritual. Her growing friendship with the characters causes the hollyphant to remember

Yeenoghu

Compendium - Sources->Dungeons & Dragons->Monsters of the Multiverse

there are few structures or signs of civilization on his layer of the Abyss. The challenge rating of Yeenoghu is 25 (75,000 XP) when he’s encountered in his lair. Lair Actions On initiative count 20

hyenas within the lair are enraged, causing them to have advantage on melee weapon attack rolls and causing attack rolls to have advantage against them. Iron Spike. Yeenoghu causes an iron spike—5

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