Casting Time: 1 action
Range: 300 ft (20 ft
)
Components: V, S, M
Duration: Concentration
, up to 10 minutes
Damage Type: Piercing
Save: Constitution
Swarming locusts fill a 20-foot-radius Sphere centered on a point you choose within range. The Sphere remains for the duration, and its area is Lightly Obscured and Difficult Terrain.
When the swarm appears, each creature in it makes a Constitution saving throw, taking 4d10 Piercing damage on a failed save or half as much damage on a successful one. A creature also makes this save when it enters the spell’s area for the first time on a turn or ends its turn there. A creature makes this save only once per turn.
The damage increases by 1d10 for each spell slot level above 5.
Material Component:
a locust
Verbal Component:
Contagio Insectum
Verbal Component (Alternative):
I call forth a writhing storm, a chittering mass of insects swarm.
Classes: Cleric, Druid, Sorcerer
Domain: Nature, Tempest
Tags: Damage
Source: Player's Handbook (2024) (page 289)
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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).
