Jelly, Stun

What appears to be a section of the wall comes to life, revealing a slightly translucent protoplasmic creature.

Stunjelly CR 3

XP 800
N Large ooze
Init +0; Senses blindsight 60 ft.; Perception -5

hp 42 (4d8+24)
Fort +7, Ref +1, Will -4
Defensive Abilities camouflage; Immune ooze traits

Melee slam +3 (1d6+1 plus 1d6 acid plus paralysis)
Space 10 ft.; Reach 5 ft.
Special Attacks corrosion, engulf (DC 13, 1d6 acid and paralysis), paralysis (3d6 rounds, DC 18)

Base Atk +3; CMB +5; CMD 15(can’t be tripped)

Environment underground
Organization solitary
Treasure incidental

Stunjellies are distant relatives of the dungeon-dwelling gelatinous cube. It appears as a section of ordinary wall and covers an area of at least 10 square feet, and is 2-1/2 to 5 feet thick. A stunjelly is gray in color and slightly translucent. It gives off a mild vinegar odor that can be detected at a range of 5 feet (DC 15 Perception check).

When a target moves within 5 feet of a stunjelly, it attacks with its slam attack. Any creature paralyzed by a stunjelly is engulfed and devoured.

Stun Jelly 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 Neville White.