Cool Down. Whenever the golem gets in contact with running water or takes cold damage its body solidifies lowering its speed by 20 ft.
Immutable Form. The golem is immune to any spell or effect that would alter its form.
Magic Resistance. The golem has advantage on saving throws against spells and other magical effects.
Multiattack. The golem makes two slam attacks.
Slam. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 14 (2d8 + 4) bludgeoning damage.
Black Lung (Recharge 5–6). The golem lets out a thick black cloud of smoke in a 15 ft cone. All players in the cone must succeed a DC 11 con save or take 2d8 poison damage and spend their turn coughing. On a successful save they take half damage and don't begin coughing.
Description
Coal Golems are large black creatures with molten eyes that radiate heat. They are known for their black long ability that spits out a large plume of black smoke at enemies.