The Last Reflection

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Large Ooze, Neutral

Armor Class 17 (natural armor)

Hit Points 171 (18d8+90)

Speed 20 ft. climb 20 ft.

STR 20 (+5)

DEX 14 (+2)

CON 20 (+5)

INT 12 (+1)

WIS 16 (+3)

CHA 18 (+4)

Saving Throws Con +9, Wis +7, Cha +8

Skills Deception +8, Perception +7

Damage Resistances cold; psychic; bludgeoning, piercing, and slashing from nonmagical attacks

Damage Immunities poison

Condition Immunities blinded, charmed, deafened, frightened, grappled, poisoned, prone, restrained

Senses blindsight 60 ft., tremorsense 60 ft., passive Perception 17

Languages Common, Deep Speech, telepathy 120 ft.

Challenge 10 (5,900 XP) Proficiency Bonus +4

A Better World Beneath the Surface. The Last Reflection's surface displays an idealized version of the surrounding area: unburned buildings, living loved ones, fertile fields, or whatever the viewer most desperately wishes were true. A creature that starts its turn within 30 feet of the ooze and can see its surface must succeed on a DC 16 Wisdom saving throw or become charmed by the ooze until the start of its next turn. A creature that succeeds is immune to this trait for 24 hours. While charmed in this way, a creature must use as much of its movement as possible to approach the ooze by the safest available route.

Unreal Fluidity. The Last Reflection can move through a space as narrow as 1 inch wide without squeezing. It can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check, and it can enter the spaces of other creatures. A creature whose space it enters must succeed on a DC 17 Dexterity saving throw or be pushed 5 feet to an unoccupied space of the creature's choice.

Keeper of What Is Gone. The Last Reflection cannot willingly move more than 120 feet from the place or object it protects. It has advantage on saving throws against effects that would force it to move. If the protected place is destroyed, removed, or revealed to be truly unreachable, the ooze loses this trait and becomes hostile toward every creature it can perceive.

Actions

Multiattack. The Last Reflection makes two Reflective Tendril attacks.

Reflective Tendril. Melee weapon Attack: +9 to hit, reach 15 ft., one target. Hit: 14 (2d8+5) bludgeoning damage, plus 7 (2d6) psychic damage. If the target is Large or smaller, it must succeed on a DC 17 Strength saving throw or be grappled by the ooze. Until this grapple ends, the target is pulled 10 feet toward the ooze at the end of each of the ooze's turns.

Drowning Invitation (Recharge 5-6). The ooze causes its surface to display the target's most beloved possible future. Each creature of the ooze's choice within 30 feet that can see the surface must make a DC 17 Wisdom saving throw. On a failed save, a creature takes 27 (6d8) psychic damage, is pulled up to 20 feet toward the ooze, and is restrained until the end of its next turn as liquid reflections coil around its limbs. On a successful save, the creature takes half as much damage and isn't pulled or restrained.

Reactions

Mirror the Blow. When a creature the ooze can see misses it with an attack, the ooze forces the attacker to witness the attack striking true in the reflected world. The attacker must succeed on a DC 16 Wisdom saving throw or be unable to take reactions until the end of its next turn.

Legendary Actions

The Last Reflection can take 3 legendary actions, choosing from the options below. Only one legendary action can be used at a time and only at the end of another creature's turn. The ooze regains spent legendary actions at the start of its turn.

Reflective Tendril. The ooze makes one Reflective Tendril attack.

Liquid Reposition. The ooze moves up to half its speed without provoking opportunity attacks. Until the start of its next turn, the first creature that enters a space within 5 feet of it must succeed on a DC 17 Dexterity saving throw or fall prone.

Drag Beneath (Costs 2 Actions). One creature grappled by the ooze must make a DC 17 Strength saving throw. On a failed save, it takes 18 (4d8) psychic damage and is pulled into the ooze's space, becoming incapacitated until the end of its next turn. On a successful save, it takes half as much damage and isn't pulled.

Environment Urban, Swamp, Underdark

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"Do not reach for the life you were promised. It is hungry for your hands." — Ilyra Venn, last cartographer of Vael Turog

Lore & Description

Appearance

The Last Reflection appears to be a broad, perfectly still puddle no deeper than a few inches, its edges feathered into transparent films of silver, blue, and rose. Its surface reflects not the world above it but a brighter one: ruined towers stand whole, dead trees are green, and the sky is always clear at sunset. Faces in the reflection smile a moment before their living counterparts do. Beneath the liquid, pale tendrils and fragments of impossible architecture drift like drowned memories.

Behavior & Origins

The Last Reflection was born when the city of Vael Turog vanished during the failed ascension of its queen, Seressa the Unforgotten. The puddle is the surviving echo of the city's final moment, and it still guards the queen's nonexistent throne room beneath a plaza that is now only cracked stone. It attacks anyone who reaches toward the reflected city because it believes they are trying to steal the last place where Vael Turog still exists. A powerful hook is the request of an old cartographer named Ilyra Venn, who wants the party to retrieve a reflected black key from the puddle; the key may open a door in the real world that has been absent for three centuries.

Running The Last Reflection

Tactics

The Last Reflection begins by allowing its idealized images to draw characters close, then uses Drowning Invitation to pull as many victims as possible into reach. It uses its tendrils to grapple isolated targets and spends legendary actions on Drag Beneath against anyone already restrained or charmed. When reduced below half its hit points, it spreads across the battlefield, blocks access to the place it protects, and fights to the death unless the characters can prove they are preserving rather than plundering the vanished city.

DM Tips

Telegraph the danger with footprints that stop at the puddle's edge, drowned handprints on nearby stone, and reflections that move independently of the people they depict.
Describe each character's reflection showing a specific lost desire; give the player a brief chance to narrate what they see before asking for the Wisdom saving throw.
The ooze speaks in overlapping voices from the reflected world, addressing characters by names used only by dead relatives or former friends.
For a weaker party, reduce the psychic damage of Drowning Invitation to 18 (4d8) and remove the incapacitated effect from Drag Beneath; for a stronger party, increase the reflection's charm range to 60 feet and give the ooze 4 legendary actions.

Loot

The Black Key of Vael Turog — A key visible only in the puddle's reflection. If removed without destroying the ooze, it becomes solid for 24 hours and opens one sealed doorway connected to the vanished city.
Seressa's Last Promise — A silver signet recovered from the bottom of the puddle, bearing the queen's impossible oath. It can serve as proof that Vael Turog existed and grants advantage on Charisma checks made to convince scholars or spirits of that fact.
Vial of Better Rain — A sealed glass vial containing a few drops of the reflection's liquid. When poured onto dead soil, it makes flowers bloom for one day, but each blossom bears the face of someone the user has lost.

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Generation Info

Original prompt:
"CR 10: A puddle that reflects a better world and drowns those who reach for it. It is protecting something that no longer exists."

Created: Sep 7, 2026
Modified: Sep 11, 2026

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