Insect Plague
While casting this spell, the cleric designates a central point for the spell’s origin up to 360 ft from where he or she stands. When the cleric utters the final words of the incantation, this focal point belches forth a massive cloud of stinging insects, which boils outward almost instantly to fill the spell’s area of effect. Within the area of this massive cloud, visibility is limited to 30 ft, and all creatures automatically sustain 1 hit point of damage per round from the stings and bites of the numberless flying vermin. All creatures caught in the cloud with 4 or fewer hit dice must check morale, and those with 2 or fewer hit dice will automatically flee until they are 240 ft away from the edge of the roiling cloud. Fire and smoke will keep the swarm at bay (as will walls of force, etc.), but virtually the only way to disperse a swarm before the spell duration expires is to cast dispel magic upon the swarm’s focal point. Even a fireball or flame strike will do nothing other than temporarily (1 turn) to clear the insects out of the area affected by their flames.