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Insect Plague

Insect Plague

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.

Tactical Usage​

Persistent Area Control: Insect Plague creates a long-duration area hazard that continuously damages enemies while providing difficult terrain and light obscurement. The 10-minute duration allows battlefield control throughout extended encounters.

Positioning Strategy: The 300-foot range allows safe positioning while maintaining area control. Place the sphere to block chokepoints, protect allies, or force enemy movement into disadvantageous positions.

Constitution Save Exploitation: Many creatures have relatively low Constitution saves, making the spell's damage more reliable than AC-based attacks. Target groups of enemies with weak Constitution for maximum effectiveness.

Spell Combinations​

Entangle Layering: Combine with Entangle to create multiple overlapping area effects. Enemies face difficult terrain from both spells while taking damage from the insect swarm, creating powerful area denial.

Web Synergy: Web-restrained enemies cannot easily escape the insect plague area, ensuring continued damage over multiple turns. The combination creates devastating area control with guaranteed damage application.

Wind Wall Protection: Use Wind Wall to protect allies from the swarm while maintaining enemy exposure. The wind barrier prevents insect movement in specific directions while preserving tactical flexibility.

Material Component Details​

Locust Symbolism: The locust component connects to biblical plagues and natural disasters, reinforcing the spell's theme of overwhelming natural forces turned to destructive purpose.

Component Acquisition: Locusts are seasonal insects that might be unavailable in certain climates or times of year. This creates interesting preparation challenges and regional considerations for spell availability.

Preserved Specimens: Dried or preserved locusts work for the component, allowing year-round spell availability through proper preparation and component storage techniques.

Creator Notes​

Friendly Fire Potential: The spell affects all creatures in the area, requiring careful positioning to avoid damaging allies. Consider party positioning and movement patterns when placing the effect.

Creature Type Effectiveness: Insects might be less effective against creatures with natural armor, elemental immunity, or those that don't rely on conventional biology for survival.

Environmental Appropriateness: The spell works best in outdoor environments where insect swarms feel natural. Indoor or underground usage might feel less thematically appropriate.

Environmental Interactions​

Natural Ecosystem: In outdoor environments, the magical insects might interact with local ecosystems, potentially attracting predators or disrupting natural balance during the spell's duration.

Climate Considerations: The spell creates a localized swarm regardless of climate, but cold or hostile environments might affect the thematic appropriateness of insect-based magic.

Structural Interaction: The insects can move through small spaces and openings that solid barriers cannot block, potentially affecting creatures behind cover or in enclosed spaces.

Common Rulings & Clarifications​

Once Per Turn: Creatures make saves only once per turn regardless of how long they remain in the area, preventing excessive damage from prolonged exposure during single turns.

Area Persistence: The sphere remains stationary once created, unlike some mobile area effects. This creates predictable area denial that both sides can plan around tactically.

Obscurement Level: Light obscurement imposes disadvantage on Perception checks but doesn't prevent vision entirely, creating moderate visual interference without complete concealment.

Alternative Applications​

Crowd Dispersal: The area effect and duration make Insect Plague effective for dispersing hostile crowds or forcing evacuation of specific areas without immediately lethal consequences.

Siege Assistance: The persistent area effect can help break sieges by making defensive positions untenable, forcing defenders to abandon advantageous terrain.

Environmental Storytelling: Use the spell to represent natural disasters, divine wrath, or ecological imbalance in environmental storytelling contexts.

Cloudkill: Similar persistent area effect with poison damage and different movement mechanics. Compare based on expected enemy resistances and positioning requirements.

Spike Growth: Different approach to area denial with piercing damage and stealth components. Choose based on whether damage persistence or concealment better serves tactical needs.

Entangle: Lower-level area control without damage but with stronger movement restriction. Layer with Insect Plague for comprehensive area denial.

Scaling Analysis​

Mid Levels (9-14): Insect Plague becomes available and provides excellent area control with consistent damage output. The long duration makes it valuable for extended encounters or battlefield preparation.

High Levels (15+): Upcast versions provide increased damage scaling, though competition from higher-level spells reduces relative effectiveness. Consider for specific tactical situations requiring persistent area control.

Campaign Phase Utility: Most effective during outdoor adventures, large-scale battles, or encounters where area control provides significant tactical advantages over direct damage.

Narrative Flavor​

Swarm Manifestation: The air fills with the drone of countless wings as a massive swarm of locusts materializes. The insects move with supernatural coordination, creating a writhing mass of chittering bodies and beating wings.

Overwhelming Numbers: The sheer quantity of insects creates a living wall of movement and sound. Individual locusts are barely visible within the mass, but their collective presence dominates the affected area completely.

Natural Fury: The swarm represents nature's wrath made manifest, with insects biting, stinging, and crawling over everything in their path. The natural plague creates primal fear while delivering consistent physical punishment.

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