Synopsis
cast 'swarm'
Description
Swarm is a powerful gating spell that creates a brief, but effective, temporalspatial claudication into a dark and dangerous part of the ethereal plane. There are any number of possible creatures that may answer the summons and enter through the portal - most will assist the caster but there is always the chance that Something Else will notice the gateway and decide to visit. This isn't always good for the caster.
Due to the spell's ethereal nature, and the nature of the beings that are summoned, it may only be cast at night. The creatures will not last long into the daylight. And due to the evil nature of the creatures summoned, casting the spell is considered an act of darkness and may have adverse affects upon the caster's alignment.