Giant Clay Golem (5e Creature)
From D&D Wiki
Giant Clay Golem
Huge construct, unaligned
Damage Immunities acid, poison, psychic; bludgeoning, piercing, and slashing from nonmagical attacks not made with adamantine weapons
Acid Absorption. Whenever the golem is subjected to acid damage, it takes no damage and instead regains a number of hit points equal to the acid damage dealt.
Berserk. Whenever the golem starts its turn with 60 hit points or fewer, roll a d6. On a 6, the golem goes berserk. On each of its turns while berserk, the golem attacks the nearest creature it can see. If no creature is near enough to move to and attack, the golem attacks an object, with preference for an object smaller than itself. Once the golem goes berserk, it continues to do so until it is destroyed or regains all its hit points.
Brute. A melee weapon deals one extra die of its damage when the golem hits with it.
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.
Siege Monster. The golem deals double damage to objects and structures.
Multiattack. The golem makes three slam attacks.
Slam. Melee Weapon Attack: +11 to hit, reach 5 ft., one target. Hit: 23 (3d10 + 7) bludgeoning damage. If the target is a creature, it must succeed on a DC 15 Constitution saving throw or have its hit point maximum reduced by an amount equal to the damage taken. The target dies if this attack reduces its hit point maximum to 0. The reduction lasts until removed by the greater restoration spell or other magic.
A clay golem with the Giant Golem template applied to it. A giant clay golem towers over most other golems, the imperfect proportions of normal clay golems become glaringly obvious in their giant cousins. Like lesser clay golems, the elemental spirit can escape easily when the physical form is damaged, and while this is dangerous in normal golems, giant clay golems can level almost anything in their path until their rage is soothed, or they are destroyed.
Constructed Nature. A giant clay golem doesn't require air, food, drink, or sleep.