Memoryweaver

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Large Aberration, Neutral Evil

Armor Class 15 (natural armor)

Hit Points 60 (8d8+24)

Speed 10 ft. fly 40 ft.

STR 14 (+2)

DEX 14 (+2)

CON 14 (+2)

INT 12 (+1)

WIS 15 (+2)

CHA 8 (-1)

Saving Throws Con +4, Wis +4

Skills Stealth +4, Perception +5

Senses darkvision 60 ft., passive Perception 15

Languages Deep Speech, telepathy 60 ft.

Challenge 4 (1,100 XP) Proficiency Bonus +2

Memory Leech. The Memoryweaver drains memories with a psychic touch. When it hits with a Tentacle attack, the target must succeed on a DC 13 Intelligence saving throw or lose one memory of the last minute. The exact memory is up to the DM and may be a spell known, a face, or a fact. Lost memories return after a long rest.

Keen Senses. The Memoryweaver has advantage on Wisdom (Perception) checks relying on sight, hearing, or smell.

Actions

Multiattack. The Memoryweaver makes two Tentacle attacks.

Tentacle. Melee weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 15 (2d10+4) psychic damage. The tentacle lashes the target. On a hit, the target takes psychic damage and must succeed on a DC 13 Intelligence saving throw or lose a memory of the last minute.

Memory Pulse (Recharge 5-6). The jellyfish releases a psychic pulse in a 15-foot radius. Each creature in that area must make an Intelligence saving throw DC 13 or lose the memory of the last minute and suffer temporary confusion for 1 round.

Environment Underdark

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Lore & Description

Appearance

A floating, bell-shaped jellyfish aberration drifts through shadowed caverns. Its translucent, lavender-bioluminescent flesh billows like a tattered veil, and long, whip-like tentacles trail behind it, ending in faint, glowing stingers that hum with silent music. Its core pulses with a pale memory-blue light, as memories from those nearby wisp away into its memory-siphoning aura. The creature seems to feed on recollections, not health, leaving its victims forgetful and hollow-eyed as it drifts on.

Behavior & Origins

The Memoryweaver is born from the remnants of ancient mind-tethers and the ambient memories of countless drowned travelers. It drifts through ruin-strewn abysses, siphoning memories rather than health to sustain its glimmering, jelly-like form. It preys on dreamers, scholars, and investigators, leaving behind exhausted, forgetful survivors who stumble away with a vague sense of loss, as if a chapter of their life had been erased. DMs may use the Memoryweaver to sow paranoia: its victims cannot recall why they came, who the creature is, or where the path home lies.

Generation Info

Original prompt:
"A floating jellyfish-like aberration that drains memories instead of health."

Created: Feb 2, 2026
Modified: May 30, 2026

Memoryweaver

Actions

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Lore & Description

Appearance

Behavior & Origins

Generation Info

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