Living Burning Hands

Medium Construct, Unaligned

AC: 15

Initiative: +1 (11)

HP: 15 (2d8 + 6)

Speed: 25 ft., fly 25 ft.

STR: 10 (+0)
DEX: 12 (+1)
CON: 16 (+3)
INT: 3 (-4)
WIS: 6 (-2)
CHA: 6 (-2)

Resistances: bludgeoning, piercing, slashing from nonmagical attacks

Immunities: fire

Condition Immunities: blinded; charmed; deafened; exhaustion; frightened; grappled; poisoned; prone

Senses: darkvision 60 ft., Passive Perception 8

CR: 1 (XP 200; PB +2)

Amorphous.

The living spell can move through a space as narrow as 1 inch wide without squeezing.

Magic Resistance.

The living spell has advantage on saving throws against spells and other magical effects.

Actions

Magical Strike.

Melee Spell Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) fire damage.

Spell Mimicry (Recharge 5-6).

The living spell unleashes a thin sheet of flames in a 15-foot cone. Each creature in that area must make a DC 13 Dexterity saving throw, taking 10 (3d6) fire damage on a failed save, or half as much damage on a successful one.

Find this creature in the encounter builder

Source: Eberron: Rising from the Last War, p. 298 - Licenses and attribution