Black imposter

False Start:

The Imposter automatically acts first in initiative order.

During the first round:

• It has advantage on all attacks
• Creatures that haven’t acted yet are frightened of it

Unnatural being 

The Imposter can move through spaces as narrow as 1 inch and ignores difficult terrain.

Bloodfuel

If the Imposter reduces a creature to 0 HP:

• It can immediately move up to half its speed
• Creatures within 10 ft must make a WIS save (DC 16) or be frightened

Skinwalker

At the start of its turn, the Imposter can take the appearance of any creature it has seen.

• Attacks against it have disadvantage until it is hit
• First hit against it reveals its true form
  
  

Multiattack

Makes two attacks

Devious lick

Range: 60 ft (make it absurdly long)

• Pulls target 20 ft toward it
• On failed STR save: target is grappled

Knife (Brutal Strike)

+10 to hit

15 ft range
Damage: 2d8 + 5 piercing + 6d6 necrotic

If the target is:

• Frightened, restrained, or surprised → deals an extra 3d6
  

Vent (Glitch Step)

Teleport up to 30 ft

Leaves behind a brief distortion:

• Area becomes lightly obscured

Sabotage (Recharge 5–6)

Roll a d4:

1. Lights Out – Magical darkness in 30 ft radius
2. Comms Sabotaged – Players cannot use reactions until next turn
3. Reactor Meltdown – Everyone takes 3d6 fire damage unless they use an action next turn to “stabilise” 
4. Fake Task – One player must succeed WIS save or waste their next action doing nothing

Uncanny Dodge

Reaction: halves damage from one attack.

Creep(1 Action)

Moves up to its speed across walls/ceilings

Sudden Strike (1 Action)

Makes one attack with advantage

Disappear (2 Actions)

Becomes invisible until the start of its next turn

Defeat (3 Actions)

Targets one grappled or frightened creature:

• Must make CON save (DC 16)
• Takes 8d6 damage, half on success