Hitchhiker's Guide to the Planes
The clerics each took a path around the field, eyeing the damage with disdain as the now exhausted farmer awaited their conclusion. After some brief whispers, the clergy had found an answer.
“We’ve gone over this field four times now. You’re sure it was-”
“Aye!”, crowed the farmer. A hundred, thousand of those little buzzers came tearin’ over yonder hill, and took my farm with it.
The clerics glanced back to his colleagues, who gave him a solemn nod.
“It’s a more grave situation than locusts, I’m afraid. The ritual yielded a high concentration of arcane control in this area. This was a sorcerer’s work. I only wish I didn’t know who it was.”
Far to the north, a man watched over the ravaged land before him, watched over his crowning achievement as the swarm gathered behind him. Malkin would soon be more than just the concern of old farmers and priests. Not long after, legions marched on his tower, and as they did so, he called on his favoured ability once more. They heard the drone first. Then, they saw it: the horde rise, spinning around and through them, as if a singular entity. And the last thing they would see was the sun being blocked out.
Where most surveyors of magic shaped and mastered spells based on the primal elements of the world, searing fire and crackling lightning, others preferred to tap into nature when forming their spells. Clerics and druids of nature wielded this plague as a show of their faith and devotion, while sorcerers can learn this spell with little more than their instinct.
Insect Plague is often assumed to be a sister spell to Earthquake and Tidal Wave, as these spells are not merely sorceries, but emulations of natural phenomena. For that reason, such spells can often be mistaken for omens from the gods, and some omens of the gods can be dismissed as being such spells. Both cases have the same effect: the locusts tear through everything and leave little in their wake.
To conjure such a horde, one must first consider the requirements to bring them under your control, at least for a time. Most incarnations of this spell use what the locusts prey on most ad a lure: grain, sugar, and a smear of pure fat. Once summoned, the locusts make do with whatever they are summoned upon to satisfy their ceaseless hunger.
Not only a formidable damage tool to large enemy forces through the constant onslaught of the locusts within, the plague also obscures the area while consuming it, as well as slowing the movement of those unfortunate enough to be caught within it, or foolish enough to enter. Placing this spell in a choke points can bottleneck enemy forces while wearing them down, and in the open can used easily in tandem with other area of effect spells to trap and destroy even a well trained force with ease.
Insect Plague is a conjuration spell much like those which summon demons, devils and celestials for service, and serves a similar purpose only without the concern a cautious conjurer is usually faced with of losing control of their summoned entity. Remember that the locusts are not good or evil, and alignment will offer no protection should you fall within the confines of your own plague.
Outside of combat, this spell, while inspired by nature can be used against it with horrifying effectiveness. Locusts are infamous for their ability to strip down areas in a manner of seconds, which can give this spell the potential to be as damaging as fire, but without the risk of spreading, or the preventative of water.