Leather Golem Armor

+1 Leather armor
Immutable Form: You are immune to any spell or effect that would alter your form.
Lightning Absorption: You gain resistance to lightning damage. Whenever you take lightning damage, you gain 5 temporary hit points.
Aversion of Fire: If you take fire damage, you have disadvantage on attack rolls and ability checks until the end of your next turn.
Berserk: Whenever a critical hit is made against you, roll a d6. On a 6, the armor causes you to go berserk. On each of your turns while berse