Coal Golem

Armor Class 16

Hit Points 95 (10d10 + 40)

Speed 40 ft.

Initiative +3

Damage Immunities fire, poison, psychic; bludgeoning, piercing, and slashing from nonmagical weapons that aren't adamantine

Condition Immunities blinded, charmed, deafened, exhaustion, frightened, paralyzed, petrified, poisoned

Senses blindsight 60 ft., passive Perception 9

Languages understands the language of its creator and/or sacrifices but can't speak

Challenge 9 (5,000 XP)

Multiattack. The golem makes either two slam attacks or one slam attack and it uses its furnace ability.

Slam. Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 11 (2d6 + 4) piercing damage plus 7 (2d6) fire damage.

Furnace (Recharge 4-6). The golem opens it's furnace, exuding burning ash and the screams of bound souls in a 15-foot cone. Each creature in that area must make a DC 18 Dexterity saving throw, taking 14 (4d6) fire damage and 14 (4d6) psychic damage on a failed save, or half as much on a successful one.