Even though you were constructed, you are a living creature. You are immune to disease. You do not need to eat or breathe, but you can ingest food and drink if you wish. Instead of sleeping, you enter an inactive state for 4 hours each day. You do not dream in this state; you are fully aware of your surroundings and notice approaching enemies and other events as normal.

You have vulnerability to fire damage.

Your creature type is undead despite the fact you are living. You have advantage against saving throws that target undead creatures. However, like other undead, you cannot regain hit points as a result of spells like cure wounds.

Whenever you are subjected to lightning damage, you instead take no damage. If it was from a 1st level or higher spell, regain a number of hit points equal to the lightning damage dealt. Lightning damage from all other sources, you gain temporary hit points.

Increase your Strength by 2 and your Constitution by 1

Whenever you start your turn with half of your maximum HP or fewer and are not incapacitated, roll a d6. On a 6, you go berserk. On each of your turns while berserk, you attack the nearest creature you can see. If no creature is near enough to move to and attack, you attack a an object, with preference for an object small than yourself. Once you go berserk, you continue to do so until you are destroyed or regain all your hit points.

After one minute, you may attempt to calm yourself by making a Wisdom saving throw against a DC of 15. On a success, you regain control of your actions. On a failure, you continue to go berserk. You do not need to roll a d6 at the beginning of your turns unless you take additional damage which leaves you below half of your maximum hit points.

While you are going berserk a trusted ally may attempt to calm you by speaking in a calm, firm voice as an action. You must be able to hear the ally, who makes a persuasion check against a DC of 15. On a success, you are calmed just as if you passed the Wisdom save to calm yourself.

Constructs built to serve their master’s will without complaint, most golems are neutral.