Existing on a dark and foreboding plane, these parasitic horrors can't exist in the material plane without a mortal host. It's not known who the first host was or how they was infected, but it gave these horrors a glimpse into our world and allows them to propagate and devour. All that is seen of these creatures is their gnashing maw which fills their hosts chest, and their razor sharp tentacles, which they use to restrain their prey and carve strange symbols into their flesh. Once complete, the victim dies and their body becomes a host for a new parasitic horror which bursts through their torso. Instinct: To infect victims

• Carve a portal into a victim to host one of its entities.
• Surprises foes by mimicking a sick humanoid.
• Grapple a potential new host.

This is the winged toad idol in section 1-7 of the DCC Module "The Croaking Fane." Instinct: Protect the Croaking Fane

• Exhale poison gas