Atlas (level 5)

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

Keen Senses. The golem has advantage on perception checks relating to smell and hearing as well as survival checks related to tracking.

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

Multiattack. The abomination can make two attacks as an action: 2 claw attacks and can substitute one claw attack with a bite attack.

Claws. Melee Weapon Attack: +7 to hit, reach 10 ft., one creature. Hit: 12 (2d6 + 5) slashing damage.

Bite. Melee Weapon Attack: +7 to hit, reach 5 ft., one creature. Hit: 12 (1d8 + 6) piercing damage and succeed on a DC (10+PB) strength saving throw or be knocked prone.