Immutable Form   The golem is immune to any spell or effect that would alter its form. Lightning Absorption. Whenever the golem is subjected to lightning damage, it takes no damage and instead regains a number of hit points equal to the lightning damage dealt.   Magic Resistance    The golem has advantage on saving throws against spells and other magical effects.   Magic Weapons    The golem's weapon attacks are magical.   Undead Fortitude    If damage reduces the golem to 0 hit points, it must make a Constitution saving throw with a DC of 5 + the damage taken, unless the damage is radiant or from a critical hit. On a success, the golem drops to 1 hit point instead.   Unusual Nature    The golem doesn't require air, food, drink, or sleep.