Clockwork Golem

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

Multiattack. The golem makes four melee attacks, one for each functioning arm. If an arm is severed, the golem loses that attack.

Spin Attack. The golem uses up to 10 feet of his movement to make a spinning slam attack. Melee Weapon Attack: +7 to hit, reach 10 ft., multiple targets. Hit:  (4d8 + 5) slashing damage. The Targets must succeed in a Strength saving throw DC 15 or be flung 5 ft. in a random direction and be knocked prone.

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

Fire Breath (Recharge 6). The golem exhales fire in a 15-foot cone. Each creature in that area must make a DC 15 Dexterity saving throw, taking (6d8) fire damage on a failed save, or half as much damage on a successful one.

If an enemy within 10 ft. of the creature attacks its master, it can make a melee attack against it.