SpellVerified on build 25605617

Insect Plague

Level: Level 5 · Conjuration
Cost: Action + 5th-level spell slot
Range: 18 m
Area: 6 m radius
Roll: Constitution save
Damage: 4d10 Piercing
On a successful save: Half damage
Concentration: Yes
Components: Verbal, Somatic

Locusts attack everyone within range, make the area Difficult Terrain, and impose Disadvantage on Perception Checks.

Damage by spell slot

Average at 5th level

4d10 Piercing

Average at 6th level

27.5

5d10 Piercing

Per slot level

+5.5

each slot above 5th

5th-level slot22 4d10 Piercing
6th-level slot27.5 5d10 Piercing

Average damage of one cast at each spell slot, from the game's own upcast entries; a creature that succeeds the save takes half.

Slot	Damage	Average	On a save
5th	4d10 Piercing	22	11
6th	5d10 Piercing	27.5	13.8

Who can get it

From the game's class, subclass and race progression tables (the level is the class or character level it first becomes available at), feat choices, equipment boosts and scrolls.

Classes 3

Cleric · always known, from level 9
Druid · always known, from level 9
Sorcerer · can pick, from level 9

Subclasses 2

Nature Domain (Cleric) · always known, from level 9
Tempest Domain (Cleric) · always known, from level 9

Conditions applied 1

Insect Plague (variant 2) · 10 turns