Soulsliver

Medium monstrosity (shapechanger), neutral evil

Armor Class 14 (natural armor)
Hit Points 38 (7d8+7)
Speed 40 ft.

STR	DEX	CON	INT	WIS	CHA
14 (+2)	17 (+3)	12 (+1)	11 (+0)	12 (+1)	13 (+1)

Skills Acrobatics +5, Insight +3, Perception +5, Stealth +7
Damage Immunities thunder
Senses passive Perception 15
Languages Common, Deep Speech
Challenge 1/2 (100 XP)

SPECIAL TRAITS

• Death Throes. When the soulsliver dies, it explodes, and each creature within 20 feet of it must make a DC 11 Dexterity saving throw, taking 7 (2d6) piercing damage on a failed save, or half as much damage on a successful one.
• Innate Spellcasting: The soulsliver’s innate spellcasting ability is Charisma (spell save DC 11). The soulsliver can innately cast the following spells, requiring no material components:
  • 3/day each: mage hand, major image
  • 1/day each: mirror image
• Mimicry. A soulsliver can perfectly mimic voices. A creature may make a DC 11 Wisdom (Insight) c heck to determine something is amiss.

ACTIONS

• Multiattack. The soulsliver makes two slam attacks.
• Slam. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) bludgeoning damage.
• Change Shape. The soulsliver polymorphs into a Small or Medium humanoid it has seen, or back into its true form. Its statistics, other than its size, are the same in each form. Any equipment it is wearing or carrying isn’t transformed. However, it appears to be wearing the same clothing or armor as its form. It reverts to its true form if it dies. When a soulsliver uses change shape, it can assume the appearance of a specific individual. However, it is always the mirror image of the person it copies, which might give away that something is wrong.
• Mirror Travel. A soulsliver can crawl into any mirror as if it were a door or window, instantly transporting itself to another mirror within 500 feet. It can remain within that mirror indefinitely, or on its next turn crawl out or use this ability again. It can only exit a mirror if it is using change shape to take a specific creature’s form. If the mirror it is in is destroyed, the soulsliver takes any damage in excess of what was needed to destroy it and appears in an adjacent space.

ABOUT

A soulsliver is an extradimensional shapechanger that lurks in the half-dimensions behind mirrors. It watches creatures on the Material Plane through reflective surfaces, assumes their likeness, then crawls through the mirror to kill and feast upon its prey. Whether they are bizarre offshoots of the doppelganger race or originate from some aberrant magic used to create a demiplane, soulslivers are responsible for many unsolved murders, and their mirror travel makes them hard to catch. A soulsliver causes trouble for a short while in its assumed form, then retreats through the mirror to its home plane. Its native plane is an aspect of the Plane of Shadow, with reversed and grossly distorted creatures and scenery from the Material Plane.