Medium aberration (shapechanger), chaotic evil

Armor Class: 17 (Unnatural Reflexes)

Hit Points: 145

Speed: 30 ft , climb: 30 ft

STR

16 +3

DEX

18 +4

CON

18 +4

INT

13 +1

WIS

14 +2

CHA

16 +3

Saving Throws: Dex +8 Con +8 Wis +6

Skills:

Deception +7, Stealth +8, Perception +6, Insight +6

Damage Resistances: Necrotic, bludgeoning, piercing and slashing from non magical attacks.

Condition Immunities: Frightened

Senses:

Darkvision 120ft., passive Perception 16

Languages: Common, Night Garden, Telepathy

Challenge Rating: 8

Proficiency Bonus: +4

Actions

Multi attack
The Night Guard makes three attacks.

Rend Flesh
Melee Weapon Attack: +8 to hit, reach 5 ft., one target
Hit: 9 (1d8 + 5) slashing + 7 (2d6) necrotic damage
If the target is below half HP, it must succeed on a DC 15 Constitution save or suffer Bleeding, taking 7 (2d6) necrotic damage at the start of each of its turns (action to stop).

Skin Theft (Recharge 5–6)
The Nightguard targets a creature within 5 ft. that is below 25% HP. The target must make a DC 16 Constitution saving throw.

• Failure: The creature drops to 0 HP as the Nightguard tears into it and begins wearing its form. The affected target must treat all death saving throws as failures.
• Success: The creature takes 27 (6d8) necrotic damage and is frightened until the end of its next turn.

If the target dies, the Nightguard immediately assumes its form via Horrid Mimicry.

Reactions

Borrowed Flesh
When hit by an attack, the Night Guard adds +3 to its AC against the attack, draining it from the AC of another Night Guard within 20ft. If there is no Night Guard within 20ft, this reaction is impossible.

Legendary Actions

Skitter: Move up to half speed without provoking opportunity attacks

Attack: Make one Rend Flesh attack

Usual Tactics

Targets the weakest player first.

Retreats, strikes, and isolates where possible.