Casting Time: 1 action
Range: 120 ft (20 ft
)
Components: V, S
Duration: Concentration
, up to 10 minutes
Damage Type: Poison
Save: Constitution
You create a 20-foot-radius Sphere of yellow-green fog centered on a point within range. The fog lasts for the duration or until strong wind (such as the one created by Gust of Wind) disperses it, ending the spell. Its area is Heavily Obscured.
Each creature in the Sphere makes a Constitution saving throw, taking 5d8 Poison damage on a failed save or half as much damage on a successful one. A creature must also make this save when the Sphere moves into its space and when it enters the Sphere or ends its turn there. A creature makes this save only once per turn.
The Sphere moves 10 feet away from you at the start of each of your turns.
The damage increases by 1d8 for each spell slot level above 5.
Verbal Component:
Nimbus Kedavra Maxima
Verbal Component (Alternative):
Billowing forth with woe and ill, suffocating pestilent, this cloud to kill.
Classes: Sorcerer, Wizard
Tags: Damage
Source: Player's Handbook (2024) (page 251)
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Other Planes and Effects
Below is information about this spell as it relates to other planes and area of effects (i.e. underwater). Some of the information is pulled official D&D sources (such as books and the twitter feeds of D&D officials), but other information is derived from forums and online discussions. As always, it is up to the DM to decide how they wish to handle spell effects.
Underwater - Verbal Component
Official rules have been verified by Jeremy Crawford - "No rule prohibits verbal components from working underwater. Keep in mind that if you're talking, you're not holding your breath." Hence, while submerged underwater and holding its breath, a creature can cast a spell that requires a verbal component. After casting the spell, if the creature can't breathe underwater, it immediately runs out of breath. The creature can survive for a number of rounds equal to its Constitution modifier (minimum of 1 round).
