Insect Plague
Level 5 Conjuration (Cleric, Druid, Sorcerer)
Casting Time: 1 Action
Range: 300 feet (20 ft. )
Components: V, S, M (a locust)
Duration: Concentration, up to 10 minutes
Attack/Save: CON Save
Damage/Effect: Piercing
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.
Using a Higher-Level Spell Slot. The damage increases by 1d10 for each spell slot level above 5.