Dust Bunny Swarm
CREATURE 1Dust bunnies in particular are prone to swarming. This can occur when a large number are left alone for a long period of time and are then disturbed by adventurers or a returning wizard. Other times, a singular dust bunny familiar grows in such numbers (and they will rapidly reproduce!) that a wizard cannot hope to keep them all placated with food and attention. In this situation, they will unionize in rebellion against their master.
It is paramount that you do not allow a dust bunny to multiply, for once a swarm has formed, they are nigh impossible to get rid of. While relatively easy to disperse and unlikely to kill anyone, they will re-form within the week unless the area is immaculately cleaned.
Effect: Cloud of Allergens
When a dust bunny swarm is destroyed, it re-forms after 2d4 days in the area in which it was destroyed unless the location has been significantly cleaned of all dust and debris.
Each enemy in the swarm's space takes 1d6 bludgeoning damage with a DC 16 basic Reflex save. A creature that fails its save cannot use reactions for 1 round as they sneeze uncontrollably.