This creature appears as a large, undulating mass of black goo from which rotted and broken bones protrude.
Undead Ooze CR 6
Speed 20 ft., climb 20 ft.
Melee slam +3 (2d4+1 plus 1d6 cold)
Space 15 ft.; Reach 10 ft.
Special Attacks cold, engulf (DC 15, 1d6 cold), skeletons
The undead ooze has an advantage over any other ooze: intelligence. It uses this new gift to its fullest in combat by attacking from surprise or by stalking its prey and attacking when the opportunity presents itself. The undead ooze attacks by slamming its body into its prey. It usually engulfs its foes or expels its skeleton allies to contend with its enemies.
As a full-round action, an undead ooze can expel 1d6 skeletons from its mass. Skeletons can act in the round they are expelled, and each skeleton conforms to the basic statistics for its size. Slain skeletons are engulfed by the undead ooze and can be reanimated and expelled again in 1d2 hours. An undead ooze’s form holds up to 10 skeletons. These skeletons are included in the determination of the undead ooze’s CR.
When an ooze moves across the grave of a restless and evil soul, a transformation takes place. The malevolent spirit, still tied to the rotting flesh consumed by the ooze, melds with the ooze. The result is a creature filled with hatred of the living and an intelligence and cunningness not normally known among its kind.
Undead Ooze from the Tome of Horrors Complete, Copyright 2011, Necromancer Games, Inc., published and distributed by Frog God Games; Author Scott Greene, based on original material by Sword & Sorcery Studios.