Warforged Guardian

Immutable Form. The guardian is immune to any spell effect that alters its form.

Multiattack. The warforged titan makes one axehand attack and one hammerfist attack.

Axehand. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 19 (3d8 + 6) slashing damage, plus 11 (2d10) slashing damage if the target is prone.

Hammerfist. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 19 (3d8 + 6) bludgeoning damage. If the target is a creature, it must succeed on a DC 17 Strength saving throw or be knocked prone.

Sweeping Axe (Recharge 6). The guardian makes a sweep with its axehand, and each creature within 10 feet of it must make a DC 17 Dexterity saving throw. A creature takes 19 (3d8 + 6) slashing damage on a failed save, or half as much damage on a successful one.

Thrusting Strike (Recharge 5-6). Reach 50 ft., one target. The guardian leaps forward head first slamming into its target. The creature must make a DC 18 Dexterity saving throw or be struck by the guardian. On a failed save the target takes (3d10+8) bludgeoning damage and fall prone. If the target is  tiny than it is crushed by the guardians sheer force.