Hey, it’s the living web’s cousin!
From module UK4 – When a Star Falls:
MEMORY WEB
FREQUENCY: Very rare
No. APPEARING: 1
ARMOUR CLASS: 2
MOVE: 3" or leap 18"
HIT DICE: 6
%IN LAIR: Nil
TREASURE TYPE: Nil
NO. OF ATTACKS: 1
DAMAGE/ATTACK: 1-6
SPECIAL ATTACKS: Nil
SPECIAL DEFENCES: Non-magical weapons only do half damage
MAGIC RESISTANCE: Standard
INTELLIGENCE: Very
ALIGNMENT: Neutral
SIZE: See below
PSIONIC ABILITY: Nil
Attack/defence modes: Nil
LEVEL/xpVALUE: lV/110 + 4 per hit point
This creature is an animated mass of fibres resembling those created by a web spell (see PHB p72) and has similar but not identical attributes. It can hide by compressing itself into a tight ball and attacks by leaping up to 18", spreading out as it does so. It will enmesh anyone within a circular area 20 feet across and does not need anchor points. Anyone caught has the same chance of breaking free as from a normal web, and will take 1-6 hit points of damage (by constriction) per round until the web is destroyed or they are released. A memory web will take only half damage from non-magical weapons or fire.
Memories of dead victims are absorbed by the memory web, and if destroyed, it will emit all memories gained during the previous day, in a kind of telepathic shock wave. These will lodge in the minds of creatures up to 200 feet from the web, and will take the form of dream-like recollections with some details clear, and others just beyond recall.
From MC3, very similar (merely the difference between 1E and 2E):
Web, Living
Memory
CLIMATE/TERRAIN: Caverns, ruins
FREQUENCY: Very rare
ORGANIZATION: Solitary
ACTIVITY CYCLE: Any
DIET: Carnivorous
INTELLIGENCE: Very (11-12)
TREASURE: Nil
ALIGNMENT: Neutral
NO. APPEARING: 1
ARMOR CLASS: 2
MOVEMENT: 3 (leap 18)
HIT DICE: 6
THAC0: 13
NO. Of ATTACKS: 1
DAMAGE/ATTACK: 1-6
SPECIAL ATTACKS: Nil
SPECIAL DEFENSES: See below
MAGIC RESISTANCE: Nil
SIZE: See below
MORALE: Elite (13-14)
XP VALUE: 3000
This creature is a mass of fibers resembling those created by a web spell; it has similar but not identical attributes. It can hide by compressing itself into a tight ball. It attacks by leaping up to 180 feet, spreading out into a circular web 20 feet in diameter. The web does not need anchor points. Anyone caught by the memory web has the same chance of breaking free as if escaping a normal web. As the web constricts, enwrapped victims suffer 1d6 points of damage per round until they escape, die, or the web is destroyed. A memory web suffers only half damage from non-magical weapons or fire.
Memories of slain victims are absorbed by the memory web. If the web is destroyed, it will emit all the memories gained during the previous day in the form of a telepathic shock wave. The memories lodge into the minds of all creatures up to 200 feet from the web and take the form of dream-like recollections. Some details will be clear, others beyond recall.