Alchemy Golem

If the alchemy golem takes fire damage, it has disadvantage on ability checks and attack rolls until the end of its next turn.

The alchemy golem is immune to any spell or effect that would alter its form.

Whenever the alchemy golem is subjected to lightning damage, it takes no damage and instead regains a number of hit points equal to half the lightning damage dealt.

The alchemy golem has advantage on saving throws against spells and other magical effects.

The alchemy golem's weapon attacks, including monstrous grafts added by its creator, are magical. Monstrous grafts have a +6 attack bonus, deal twice the normal number of damage dice, and have a +5 bonus to their damage rolls. The alchemical golem can only have 1 graft in each slot.

The alchemy golem makes two melee weapon attacks.

Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 12 (2d8 + 3) bludgeoning damage.