Metallic Peacekeeper

Medium Construct, Neutral Good

AC: 17

Initiative: +0 (10)

HP: 68 (8d8 + 32)

Speed: 30 ft.

STR
17 (+3)
DEX
10 (+0)
CON
18 (+4)
INT
14 (+2)
WIS
12 (+1)
CHA
11 (+0)

Immunities: fire

Condition Immunities: charmed; exhaustion; frightened; paralyzed; petrified; poisoned

Senses: darkvision 60 ft., Passive Perception 11

Languages: Common, Draconic, telepathy 30 ft.

CR: 4 (XP 1,100; PB +2)

Immutable Form.

The peacekeeper is immune to any spell or effect that would alter its form.

Telepathic Bond.

While the peacekeeper is on the same plane of existence as its master, it can magically convey what it senses to its master, and the two can communicate telepathically with each other.

Actions

Multiattack.

The peacekeeper makes two Slam attacks.

Slam.

Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 16 (3d8 + 3) bludgeoning damage.

Calming Mist (Recharge 5-6).

The peacekeeper releases a calming gas in a 30-foot-radius sphere centered on itself. Each creature in that area must succeed on a DC 14 Charisma saving throw or become charmed by the peacekeeper for 1 minute. While charmed in this way, the creature is incapacitated and has a speed of 0.

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Metallic Peacekeeper

Source: Fizban's Treasury of Dragons, p. 210 - Licenses and attribution