The Ephemeral Swarm is a collection of tiny, ghostly wraiths, each appearing as a wispy, translucent rats with glowing eyes. These swarms drift through abandoned or haunted locations, whispering softly as they move. They are capable of draining life from any living creature they envelop, leaving behind cold, lifeless bodies. The presence of an Ephemeral Swarm brings an unnatural chill to the air, and their touch is as cold as death itself. These swarms are often found in places of great sorrow or tragedy, lingering to feed on the residual energies of the deceased.