Void Stalker

Large fiend (shadow), chaotic evil

A Void Stalker is a manifestation of predatory darkness: eight feet tall, humanoid in shape but composed of flickering shadow that shifts and reforms with every movement. Its eyes burn with cold violet light. It moves with the deliberate patience of an apex predator, stalking through darkness it creates, striking and retreating before its prey can respond.

Armor Class:15 (natural armor)
Hit Points:68 (8d10 + 24)
Speed:40 ft
Challenge:CR 5
STR
18 (+4)
DEX
16 (+3)
CON
16 (+3)
INT
8 (-1)
WIS
14 (+2)
CHA
10 (+0)
Saving Throws:DEX +6, CON +6, WIS +5
Skills:Perception +5, Stealth +9
Damage Resistances:Cold, necrotic; bludgeoning, piercing, and slashing from nonmagical attacks
Senses:Darkvision 120 ft, blindsight 30 ft, passive Perception 15
Fear Check:DC 15 WIS save.

Traits

Void Cloak. While in dim light or darkness, the Void Stalker is invisible.
Aura of Dread. Any creature that starts its turn within 15 feet of the Void Stalker must succeed on a DC 13 WIS save or be frightened until the start of its next turn.
Shadow Step. As a bonus action, the Void Stalker can teleport up to 30 feet to an unoccupied space it can see that is in dim light or darkness.

Actions

Multiattack. The Void Stalker makes two Claw attacks.
Claw. *Melee Weapon Attack:* +7 to hit, reach 10 ft, one target. *Hit:* 11 (2d6 + 4) slashing damage plus 7 (2d6) necrotic damage.
Rend the Veil (1/Day). The Void Stalker tears at the boundary between worlds. All nonmagical light sources within 100 feet are extinguished. Each creature within 30 feet of the Void Stalker must make a DC 15 CON save, taking 18 (4d8) necrotic damage on a failure, or half as much on a success. On a failure, the creature is also blinded for 1 round.