Lesser creatures from planes best left undiscovered. Although they can feed and reproduce fine within their native realm, when cast adrift beyond they need biological matter to do so - it does not matter if it is alive or dead - but living tissue lasts longer for their purposes. Lately there have been more and more infestations of these creatures, but what that means exactly is unclear. Instinct: To Feed

• Inject paralytic venom
• Burst from dead (or far-warped) flesh
• Implant its eggs into biological material