Power of the Flesh Golem

You have developed traits similar to those possessed by a flesh golem, granting you the following benefits:

• Increase your Strength or Constitution by 1, to a maximum of 20.
• You gain resistance to lightning damage.
• Once per turn, when you take the Attack action, you can make one additional attack as part of the same action. You can use this feature a number of times equal to your proficiency bonus, and you regain all expended uses when you finish a long rest.
• Your unarmed strikes deal 2d6 bludgeoning damage.
• If you start your with fewer than half of your hit points remaining, roll a d6, on a 6 you go berserk. While berserk, you must use your movement to move towards the nearest creature, the only action you can take is the attack action and you can only attack you can make is an unarmed strike against the creature nearest to you. If no creature is near enough to move to and attack, you attack an object, with preference to one smaller than you. At the start of each of your turns while berserk, you can make a DC 15 Wisdom saving throw. On a success, you cease being berserk, but if you take damage with fewer than half of your hit points remaining you might go berserk again.