become both diffusing caster replace

Alter Self

Spells Player’s Handbook

You alter your physical form. Choose one of the following options. Its effects last for the duration, during which you can take a Magic action to replace the option you chose with a different one

spell to become quadrupedal, for instance. For the duration, you can take a Magic action to change your appearance in this way again. Natural Weapons. You grow claws (Slashing), fangs (Piercing

Medani Inquisitive

Monsters Eberron: Forge of the Artificer

Multiattack. The inquisitive makes three Crooked Staff attacks. It can replace one attack with a use of Inquisitive Eye. Crooked Staff. Melee Attack Roll: +4;{"diceNotation":"1d20+4", "rollType":"to

has marked. While marked, the target can’t become hidden from the inquisitive, and if it has the Invisible condition, it gains no benefit from that condition against the inquisitive. The mark

Sammaster (Dracolich Form)

Monsters Forgotten Realms: Adventures in Faerûn

attacks. He can replace one attack with a use of Spellcasting to cast Blight or Ray of Sickness (level 6 version). Rend. Melee Attack Roll: +14;{"diceNotation":"1d20+14", "rollType":"to hit

rule Faerûn. His Cult of the Dragon devotes itself to helping evil dragons become dracoliches to bring this evil new age to fruition. Sammaster was killed in battle, but had prepared contingencies

Sammaster (Lich Form)

Monsters Forgotten Realms: Adventures in Faerûn

three attacks, using Corrosive Burst or Paralyzing Touch in any combination. He can replace two attacks with a use of Spellcasting. Corrosive Burst. Melee or Ranged Attack Roll: +13;{"diceNotation

. His Cult of the Dragon devotes itself to helping evil dragons become dracoliches to bring this evil new age to fruition. Sammaster was killed in battle, but had prepared contingencies for his demise

Manshoon

Monsters Forgotten Realms: Adventures in Faerûn

Magic Resistance. Manshoon has Advantage on saving throws against spells and other magical effects.Multiattack. Manshoon makes three Arcane Burst attacks. He can replace two attacks with a use of

knowledge and personal secrets. The Zhentarim wouldn’t have become the organization it is today—one where treachery and subterfuge are the order of the day—without Manshoon’s

Living Bigby's Hand

Monsters Icewind Dale: Rime of the Frostmaiden

serves as a guardian, attacking creatures that cross its path while remaining loyal to its caster. Areas of wild magic and sites that have been ravaged by powerful eldritch forces can give rise to spell

effects that become living beings. These so-called living spells haunt the places where they were created, subsisting on ambient magical energy.Poison

Gynosphinx Legacy

Monsters Basic Rules (2014)

that every creature in the lair must succeed on a DC 15 Constitution saving throw or become 1d20;{"diceNotation":"1d20","rollType":"roll","rollAction":"Aging"} years older or younger (the sphinx&rsquo

moves up to 10 years forward or backward (sphinx’s choice). Only the sphinx is immediately aware of the time change. A wish spell can return the caster and up to seven other creatures designated by

Charmayne Daymore

Monsters Keys from the Golden Vault

Legendary Resistance (3/Day). If Charmayne fails a saving throw, she can choose to succeed instead.Multiattack. Charmayne makes three Ashen Burst attacks. She can replace one of these attacks with

has no effect. Whatever the spell’s level, the caster takes 10 (3d6);{"diceNotation":"3d6", "rollType":"damage", "rollAction":"Fiery Counterspell", "rollDamageType":"fire"} fire damage if the

Sphinx of Judgment

Monsters Guildmasters’ Guide to Ravnica

every creature in the lair must succeed on a DC 15 Constitution saving throw or become 1d20;{"diceNotation":"1d20","rollType":"roll","rollAction":"Lair Action (Aging)"} years older or younger (the

within moves up to 10 years forward or backward (sphinx’s choice). Only the sphinx is immediately aware of the time change. A wish spell can return the caster and up to seven other creatures

Enhanced Sphinx

Monsters Lost Laboratory of Kwalish

. The sphinx can choose not to reroll. The effects of time are altered such that every creature in the lair must succeed on a DC 15 Constitution saving throw or become 1d20;{"diceNotation":"1d20

spell can return the caster and up to seven other creatures designated by the caster to their normal time. The sphinx shifts itself and up to seven other creatures it can see within in its lair to

Tarrasque Legacy

Monsters Basic Rules (2014)

":"roll","rollAction":"Reflective Carapace"}. On a 1 to 5, the tarrasque is unaffected. On a 6, the tarrasque is unaffected, and the effect is reflected back at the caster as though it originated from the

tarrasque, turning the caster into the target. Siege Monster. The tarrasque deals double damage to objects and structures.Multiattack. The tarrasque can use its Frightful Presence. It then makes five

Androsphinx Legacy

Monsters Basic Rules (2014)

become 1d20;{"diceNotation":"1d20","rollType":"roll","rollAction":"Aging"} years older or younger (the sphinx’s choice), but never any younger than 1 year old. A greater restoration spell can

immediately aware of the time change. A wish spell can return the caster and up to seven other creatures designated by the caster to their normal time. The sphinx shifts itself and up to seven other

Otyugh Mutate

Monsters Phandelver and Below: The Shattered Obelisk

or Tentacle attacks. It can replace one of these attacks with Chitin Slam. Bite. Melee Weapon Attack: +7;{"diceNotation":"1d20+7", "rollType":"to hit", "rollAction":"Bite"} to hit, reach 5 ft., one

metamorphosis as the powers of the Far Realm rewrite the fundamentals of the creature’s existence. Any creature can become a mutate and transform to exhibit physical characteristics associated

Monastery of the Distressed Body, Grand Master

Monsters Lost Laboratory of Kwalish

of a Vorpal Sword. Shards of a vorpal sword once broken against the devil replace its claws. A successful DC 12 Intelligence (Arcana) or Wisdom (Perception) check identifies them as such. When the

damage plus 17 (5d6);{"diceNotation":"5d6","rollType":"damage","rollAction":"Sting","rollDamageType":"poison"} poison damage, and the target must succeed on a DC 14 Constitution saving throw or become

Barrowghast

Monsters Bigby Presents: Glory of the Giants

attacks. It can replace one Slam attack with a Life Drain attack. Slam. Melee Weapon Attack: +8;{"diceNotation":"1d20+8", "rollType":"to hit", "rollAction":"Slam"} to hit, reach 10 ft., one target

on a failed save, or half as much damage on a successful one.A hill giant who dies with an empty stomach, full of rage and regret, might become suffused with energy from the Negative Plane and rise as

Encephalon Cluster

Monsters Phandelver and Below: The Shattered Obelisk

effects.Multiattack. The cluster makes two Slam attacks. It can replace one of these attacks with Spawn Progeny if available. Slam. Melee Weapon Attack: +10;{"diceNotation":"1d20+10", "rollType":"to hit

become a gorging menace that can overrun an entire mind flayer colony. Encephalons When an illithid colony lays its eggs dangerously close to a Far Realm rift, an egg sac has a chance to mutate into

Vecna the Archlich

Monsters Vecna: Eve of Ruin

’s level, the caster takes 10 (3d6);{"diceNotation":"3d6", "rollType":"damage", "rollAction":"Dread Counterspell", "rollDamageType":"psychic"} psychic damage if the spell fails. Fell Rebuke. In

this adventure, Vecna has risen to godhood on Oerth, but he seeks to become the most powerful god in existence and bend the multiverse to his will. By the time the characters are involved, Vecna’s

Factol Skall

Monsters Adventure Atlas: The Mortuary

is 5th level or higher, Skall makes an Intelligence check (DC 10 + the spell’s level). On a successful check, the spell fails and has no effect. Whatever the spell’s level, the caster

Doors. The Heralds of Dust idolize their ageless factol, whose stoic visage has become the faction’s emblem. Skall can usually be found examining his orrery of souls (detailed in Adventure Atlas

Carrion Stalker

Monsters Van Richten’s Guide to Ravenloft

Multiattack. The carrion stalker makes three Tentacle attacks. If it is attached to a creature, it can replace one Tentacle attack with Larval Burst, if available. Tentacle. Melee Weapon Attack: +5

instantly kills the larvae in the creature, ending the effect on it. If a creature is reduced to 0 hit points by the infestation, it dies. The larvae remain in the corpse, and one survives to become a fully

Nagpa

Monsters Mordenkainen Presents: Monsters of the Multiverse

Multiattack. The nagpa makes three Staff or Deathly Ray attacks. It can replace one attack with a use of Spellcasting. Staff. Melee Weapon Attack: +8;{"diceNotation":"1d20+8","rollType":"to hit

fallen civilizations and great calamities. Nagpas still fear the Raven Queen and do their best to avoid her and her agents. When it’s impossible to do so, they become cringing, fawning things, eager

Spawn of Kyuss

Monsters Mordenkainen Presents: Monsters of the Multiverse

. From a distance or in poor light, a spawn of Kyuss looks like an ordinary zombie. As it comes into clearer view, however, the scores of little green worms crawling in and out of it become visible. These

animates the corpse, transforming it into a spawn of Kyuss, which breeds more worms. Spawn of Kyuss are expressions of Orcus’s intent to replace all life with undeath. Left to its own devices, a

Winter Eladrin

Monsters Mordenkainen Presents: Monsters of the Multiverse

throw, ending the effect on itself on a success.Multiattack. The eladrin makes two Longsword or Longbow attacks. It can replace one attack with a use of Spellcasting. Longsword. Melee Weapon Attack

ruled by emotion—and due to their magical nature, they undergo physical changes to match their changes in temperament. Eladrin have spent centuries in the Feywild, and most of them have become Fey

Yuan-ti Malison (Type 3) Legacy

Monsters Monster Manual (2014)

their humanity to become like the serpent gods in form, as well as in thought and emotion. Serpent Kings of Fallen Empires. The yuan-ti view their physical transformation as a transcendent moment for

individual who attains enough power can devour and replace one of the yuan-ti gods. The yuan-ti strive for ascension and are willing to commit the darkest atrocities to achieve it.Poison

Dragonflesh Abomination

Monsters Fizban's Treasury of Dragons

abomination makes three attacks using Claw, Acidic Spit, or a combination of them. It can replace one of the attacks with a Tail attack. Claw. Melee Weapon Attack: +7;{"diceNotation":"1d20+7", "rollType

lingers in a draconic corpse. While most would-be grafters wind up hideously scarred or dead, a few survive as wretched horrors. Their minds become twisted by magical malevolence, with only a shadow of

Phisarazu Spyder-Fiend

Monsters Vecna: Eve of Ruin

ignores movement restrictions caused by webbing.Multiattack. The phisarazu makes one Bite attack and two Claw attacks. It can replace one of these attacks with Scintillating Spray if available. Bite

, they have become increasingly active as Miska struggles to free himself in Pandesmos.PoisonCold, Fire, Lightning; Bludgeoning, Piercing, and Slashing from Nonmagical AttacksChange Shape. The phisarazu

Geryon (Variant)

Monsters Mordenkainen Presents: Monsters of the Multiverse

Constitution saving throw or take 13 (2d12);{"diceNotation":"2d12","rollType":"damage","rollAction":"Stinger","rollDamageType":"poison"} poison damage and become poisoned until it finishes a short or

: alter self (can become Medium when changing his appearance), detect magic, ice storm, invisibility (self only), locate object, suggestion, wall of ice 1/day: banishment Teleport. Geryon magically

Mercion

Monsters The Wild Beyond the Witchlight

Special Equipment. Mercion wields a quarterstaff, +1;+1 quarterstaff.Multiattack. Mercion makes one Divine Radiance attack and one +1 Quarterstaff attack. She can replace one of these attacks with a

alone determines who can become a member of this prestigious group, which has more members than those described here. (The other members, who do not appear in this adventure, are busy elsewhere

Hydroloth

Monsters Mordenkainen Presents: Monsters of the Multiverse

on attack rolls.Multiattack. The hydroloth makes two Bite or Claw attacks. It can replace one attack with a use of Spellcasting. Bite. Melee Weapon Attack: +9;{"diceNotation":"1d20+9","rollType":"to

proficiencies; it can’t cast spells; it can’t understand language; and if its Intelligence and Charisma scores are higher than 5, they become 5. Each time the target finishes a long rest

Uthgardt Shaman

Monsters Storm King's Thunder

resentful of most kinds of magic. Seldom do they choose to become shamans. Instead, the role is thrust upon those who are born with a strong connection to the spirit world. To be a shaman is to stand

it doesn’t replace the normal components of a spell. In addition to the spells that all Uthgardt shamans can cast, a shaman of a particular tribe gains additional spells based on tribal

Spring Eladrin

Monsters Mordenkainen Presents: Monsters of the Multiverse

two Longsword or Longbow attacks. It can replace one attack with a use of Spellcasting. Longsword. Melee Weapon Attack: +6;{"diceNotation":"1d20+6","rollType":"to hit","rollAction":"Longsword"} to hit

emotion—and due to their magical nature, they undergo physical changes to match their changes in temperament. Eladrin have spent centuries in the Feywild, and most of them have become Fey

Geryon

Monsters Mordenkainen Presents: Monsters of the Multiverse

Constitution saving throw or take 13 (2d12);{"diceNotation":"2d12","rollType":"damage","rollAction":"Stinger","rollDamageType":"poison"} poison damage and become poisoned until it finishes a short or

: alter self (can become Medium when changing his appearance), detect magic, ice storm, invisibility (self only), locate object, suggestion, wall of ice 1/day: banishment Teleport. Geryon magically

Graz'zt

Monsters Mordenkainen Presents: Monsters of the Multiverse

effects.Multiattack. Graz’zt makes two Wave of Sorrow attacks. He can replace one attack with a use of Spellcasting. Wave of Sorrow (Greatsword). Melee Weapon Attack: +13;{"diceNotation":"1d20

issues the same command to all the targets. Conjure Mirrors. Smooth surfaces within the lair become as reflective as a polished mirror. Until a different lair action is used, creatures within the lair

Baernaloth

Monsters Planescape: Adventures in the Multiverse

has the charmed condition until the end of its next turn. A creature charmed in this way treats its allies as foes, and the colors of its body and equipment become shades of gray. On a successful save

frightened condition, the spell fails and is wasted unless the caster succeeds on a DC 19 saving throw using its spellcasting ability. Once a creature succeeds on the saving throw, it is immune to this

Dyrrn

Monsters Eberron: Rising from the Last War

teleport up to 30 feet to an unoccupied space it can see.Multiattack. Dyrrn makes one Tentacle Whip attack and uses its Corruption once. Dyrrn can replace its Tentacle Whip attack with Extract Brain if it

take 22 (4d6 + 8);{"diceNotation":"4d6+8","rollType":"damage","rollAction":"Corruption","rollDamageType":"necrotic"} necrotic damage and become corrupted for 1 minute. A corrupted creature’s

Strahd, Master of Death House

Monsters Vecna: Eve of Ruin

attacks. He can replace one of these attacks with Blighted Fire if available. Death Strike. Melee Weapon Attack: +9;{"diceNotation":"1d20+9", "rollType":"to hit", "rollAction":"Death Strike"} to hit

Zarovich was a prince, a soldier, and a conqueror. His thirst for power never sated, Strahd made a pact with the Dark Powers to become immortal. Meanwhile, Strahd’s evil deepened, until in a jealous

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