This protoplasmic creature resembles a giant amoeba, black in color. A deathly cold seems to emanate from its form.
Dark Matter Entropic Ooze CR 14
Speed 20 ft. (4 squares), climb 20 ft.
Melee slam +28 (2d8+15 plus energy drain)
Space 15 ft.; Reach 10 ft.
Special Attacks devour soul, energy drain (3 levels, DC 23)
A living creature slain by an entropic ooze has its soul devoured by the ooze. Such a creature cannot be returned to life until the entropic ooze that contains its soul is slain.
An entropic ooze can automatically detect the location of any living creature within 120 feet. It also senses the strength of their life force automatically, as if it had cast deathwatch.
Environment Negative Energy Plane
A larger, more powerful version of the standard entropic ooze is know as the dark matter entropic ooze, a massive creature that rarely leaves its home plane. Spellcasters who summon this creature often live (or don’t live) to regret it.
Dark Matter Entropic Ooze from the Tome of Horrors Complete, Copyright 2011, Necromancer Games, Inc., published and distributed by Frog God Games; Author Scott Greene.