Stone Golem

Stone Golem CR: 10

Large construct, neutral

Armor Class: 17 (natural armour)

Hit Points: 178 17d10+85

Speed: 30 ft

STR

22 +6

DEX

9 -1

CON

20 +5

INT

3 -4

WIS

11 +0

CHA

1 -5

Damage Immunities: Poison, Psychic, Bludgeoning, Piercing, and Slashing from nonmagical attacks not made with adamantine weapons

Condition Immunities: Charmed, Exhaustion, Frightened, Paralyzed, Petrified, Poisoned

Senses: Darkvision 120 ft, passive Perception 10

Languages: Understands the languages of it's creator but can't speak

Challenge Rating: 10

Immutable Form. The golem is immune to any spell or effect that would alter it's 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.

Actions

Multiattack. The golem makes two slam attacks.
Slam. Melee Weapon Attack +10 to hit, reach 5 ft, one target. Hit 19 3d8+6 bludgeoning attacks.
Slow (Recharge 5-6). The golem targets one or more creatures it can see within 10 feet of it. Each creature must make a DC 17 Wisdom saving throw against this magic. On a failed save, a target can't use reactions, it's speed is halved, and it can't make more than one attack on it's turn. In addition, the target can take an action or a bonus action on it's turn, not both. These effects last for 1 minute. A target can repeat the saving throw at the end of each of it's turns, ending the effect ending the effect on itself on a success.

Stone golems are created my experts in stone carving and used as defenders in their lairs. This can be found in any region created by any number of peoples over the millennia.