# Insect Plague *5th-level, Conjuration* - **Casting time:** 1 Action - **Range:** 300 feet - **Components:** V, S, M (a locust) - **Duration:** Concentration, up to 10 minutes Swarming locusts fill a 20-foot-radius [Sphere](Mechanics/CLI/rules/variant-rules/sphere-area-of-effect-xphb.md) centered on a point you choose within range. The [Sphere](Mechanics/CLI/rules/variant-rules/sphere-area-of-effect-xphb.md) remains for the duration, and its area is [Lightly Obscured](Mechanics/CLI/rules/variant-rules/lightly-obscured-xphb.md) and [Difficult Terrain](Mechanics/CLI/rules/variant-rules/difficult-terrain-xphb.md). 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 `d10` for each spell slot level above 5. **Classes**: [Druid (Circle of the Land)](Mechanics/CLI/lists/list-spells-classes-circle-of-the-land-xphb.md "subclass=XPHB;class=XPHB"); [Bard](Mechanics/CLI/lists/list-spells-classes-bard.md); [Sorcerer](Mechanics/CLI/lists/list-spells-classes-sorcerer.md); [Cleric](Mechanics/CLI/lists/list-spells-classes-cleric.md); [Druid](Mechanics/CLI/lists/list-spells-classes-druid.md); [Warlock (Fiend Patron)](Mechanics/CLI/lists/list-spells-classes-fiend-patron-xphb.md "subclass=XPHB;class=XPHB") *Source: Player's Handbook (2024) p. 289. Available in the <span title='Systems Reference Document (5.2)'>SRD</span> and the Free Rules (2024)*