Iron Golem

Iron Golem Large Construct, Unaligned 16 0 xp

Armor class 20 (Natural Armour)
Hit points 210 (20d10+100)
Speed 30 ft.

STR 24 (+7)
DEX 9 (-1)
CON 20 (+5)
INT 3 (-4)
WIS 11 (0)
CHA 1 (-5)

Damage Immunities: Fire, Poison, Psychic, Bludgeoning, Piercing, And Slashing From Nonmagical Weapons That Aren't Adamantine

Condition Immunities: Charmed, Exhaustion, Frightened, Paralyzed, Petrified, Poisoned

Senses: Darkvision 120 Ft. Passive Perception 10

Languages: Understands The Languages Of Its Creator But Can't Speak

Challenge: 16 (0 xp)

Fire Absorption: Whenever the golem is subjected to fire damage, it takes no damage and instead regains a number of hit points equal to the fire damage dealt.

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.

Magic Weapons: The golem's weapon attacks are magical.

Actions

Multiattack: The golem makes two Melee Attacks.

Slam: Melee Weapon Attack: +13 to hit, reach 5 ft., one target. Hit: 20 (3d8 + 7) bludgeoning damage.

Sword: Melee Weapon Attack: +13 to hit, reach 10 ft., one target. Hit: 23 (3d10 + 7) slashing damage.

Poison Breath (Recharge 5-6): The golem exhales poisonous gas in a 15-foot cone. Each creature in that area must make a DC 19 Constitution saving throw, taking 45 (l0d8) poison damage on a failed save, or half as much damage on a successful one.