Darkmantle

Attracted by sound, these creatures clung in wait upside-down on the tunnel's ceiling, appearing as stalactites to unwary prey. Dropping down and opening up like an umbrella, these creatures would clamp down onto the heads of their victims.

Appearance
This pitch black and grey spine octopus-type creature was naturally camouflaged to look like cavern rock. At the top of its face it had deep sunk red eyes.

Abilities
These creatures had the ability to create magical spheres of darkness.