decide instantly are become

Staff of the Python

Magic Items Dungeon Master’s Guide

As a Magic action, you can throw this staff so that it lands in an unoccupied space within 10 feet of you, causing the staff to become a Giant Constrictor Snake in that space. The snake is under your

’t have the Incapacitated condition. You decide what action the snake takes and where it moves during its turn, or you can issue it a general command, such as to attack your enemies or guard a

Alter Self

Spells Player’s Handbook

. Aquatic Adaptation. You sprout gills and grow webs between your fingers. You can breathe underwater and gain a Swim Speed equal to your Speed. Change Appearance. You alter your appearance. You decide

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

Figurine of Wondrous Power

Magic Items Dungeon Master’s Guide

the creature, the figurine doesn’t become a creature. The creature is Friendly to you and your allies. It understands your languages, obeys your commands, and takes its turn immediately after

of Wondrous Power (Bronze Griffon);Bronze Griffon (Rare). This bronze statuette is of a griffon rampant. It can become a Griffon for up to 6 hours. Once it has been used, it can’t be used again

Moonblade

Magic Items Dungeon Master’s Guide

accepted by the weapon and try to attune to it, you become attuned to it instantly, and a new rune appears on it. You remain attuned to the weapon until you die or the weapon is destroyed. A Moonblade

of these weapons have faded from the world, their magic lost as family lines have become extinct. Others have vanished with their bearers during great quests. Thus, only a few of these weapons remain

Demonomicon of Iggwilv

Magic Items Dungeon Master’s Guide

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

served as the foundation of the Demonomicon of Iggwilv. The Tome of Zyx can be destroyed like any ordinary book. Once the staff emerges, the demon lord Fraz-Urb’luu knows instantly.

Metallic Peacekeeper

Monsters Fizban's Treasury of Dragons

itself. Each creature in that area must succeed on a DC 14 Charisma saving throw or become charmed by the peacekeeper for 1 minute. While charmed in this way, the creature is incapacitated and has a

speed of 0.When a metallic dragon grows attached to a settlement of smaller folk—often after dwelling there for a time in Humanoid form—the dragon might decide to create a metallic

Marlos Urnrayle

Monsters Princes of the Apocalypse

5 or more, the creature is instantly petrified. Otherwise, a creature that fails the save begins to turn to stone and is restrained. The restrained creature must repeat the saving throw at the end of

, a creature can avert its eyes to avoid the saving throw at the start of its turn. If the creature does so, it can’t see Marlos until the start of its next turn, when it can decide to avert its

Carrion Stalker

Monsters Van Richten’s Guide to Ravenloft

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

grown carrion stalker in 1d4;{"diceNotation":"1d4","rollType":"roll","rollAction":"Weeks"} weeks. Any effect that cures diseases or removes the poisoned condition that targets the corpse instantly

Rutterkin

Monsters Mordenkainen Presents: Monsters of the Multiverse

disease or become poisoned. At the end of each long rest, the poisoned target can repeat the saving throw, ending the effect on itself on a success. If the target is reduced to 0 hit points while

poisoned in this way, it dies and instantly transforms into a living manes (see the Monster Manual). The transformation can be undone only by a wish spell.Rutterkins are warped demons that roam the Abyss in

Diderius

Monsters Tyranny of Dragons

can see Diderius, it must succeed on a DC 16 Wisdom saving throw against this magic or become frightened until the end of Diderius’s next turn. If the target fails the saving throw by 5 or more

’s temple or tomb is warped in any of the following ways by the creature’s dark presence: Food instantly molders and water instantly evaporates when brought into the lair. Other nonmagical

Gorka Tharn

Monsters Waterdeep: Dungeon of the Mad Mage

feet of it. If the target can see the mummy lord, it must succeed on a DC 16 Wisdom saving throw against this magic or become frightened until the end of the mummy's next turn. If the target fails the

its damage dice with its Rotting Fist attack, and makes Strength checks and Strength saving throws with advantage. If the mummy lord lacks the room to become Large, it attains the maximum size

Valin Sarnaster

Monsters Candlekeep Mysteries

Wisdom saving throw against this magic or become frightened until the end of Valin’s next turn. If the target fails the saving throw by 5 or more, it is also paralyzed for the same duration. A target

become a powerful undead as the first step on her path to godhood, and is now a mummy lord. Valin can use her lair actions in any area of the tomb. Personality Trait. “I have seen the future

Corpse Flower

Monsters Mordenkainen Presents: Monsters of the Multiverse

malevolent bent and despises the living. With or without corpses nested in its body, a corpse flower exudes a stench of decay that can overwhelm the senses of nearby creatures, causing them to become

one corpse in its body and instantly regains 11 (2d10);{"diceNotation":"2d10", "rollType":"heal", "rollAction":"Digest"} hit points. Nothing of the digested corpse remains. Any equipment on the corpse

Auril (Second Form)

Monsters Icewind Dale: Rime of the Frostmaiden

ice, whereupon Auril instantly reappears in her Auril (Third Form);third form, in an unoccupied space within 60 feet of where her second form was destroyed. Her initiative count doesn’t change

ice crystal that hovers in a space within 5 feet of her. Auril then targets a creature she can see within 60 feet of the crystal. The target must succeed on a DC 21 Charisma saving throw or become

Hythonia

Monsters Mythic Odysseys of Theros

force it to make a DC 18 Constitution saving throw if she isn’t incapacitated and can see the creature. If the saving throw fails by 5 or more, the creature is instantly petrified. Otherwise, on a

become part of her throne. Hythonia as a Mythic Encounter Hythonia serves as a potent threat against even high-level characters, but you can increase the challenge by using the Shed Skin trait. When

Sibriex

Monsters Mordenkainen Presents: Monsters of the Multiverse

6 levels of exhaustion, it dies and instantly transforms into a living manes (see the Monster Manual) under the sibriex’s control. The transformation of the body can be undone only by a wish

;25 The target’s eyes become beacons, filling a 15-foot cone with dim light when they are open. 26–30 A pair of wings, either feathered or leathery, sprout from the target’s

Fraz-Urb'luu

Monsters Mordenkainen Presents: Monsters of the Multiverse

’luu casts one of the following spells, requiring no material components and using Charisma as the spellcasting ability (spell save DC 23): At will: alter self (can become Medium when changing

’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

Fraz-Urb'luu Legacy

Monsters Out of the Abyss

will: alter self (can become Medium-sized when changing his appearance), detect magic, dispel magic, phantasmal force 3/day each: confusion, dream, mislead, programmed illusion, seeming 1/day each

’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

Cradle of the Cloud Scion