Elemental Absorption. Whenever a Violet Machine is subjected to its own elemental damage, it takes no damage and instead regains a number of hit points equal to the elemental damage dealt.

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.

Multiattack. The golem makes two melee attacks.

Slam. Melee Weapon Attack: +13 to hit, reach 5 ft., one target. Hit: 20 (3d8 + 7) bludgeoning damage.

Innate Spellcasting. The couatl's spellcasting ability is Wisdom(spell save DC 14). It can innately cast the following spells, requiring only verbal components:

At will: earth tremor, mold earth, mending

3/day each: erupting earth, earthbind, wall of stone, meld into stone, absorb elements, 

1/day each: Earthquake, bones of the earth, summon elemental