Immutable Form. The ring servant is immune to any spell or effect that would alter its form. Magic Weapons. The ring servant’s slam attacks are magical.
Multiattack. The ring servant makes two slam attacks. Slam. Melee Weapon Attack: +8 to hit, reach 5 ft., one target. Hit: 18 (3d8 + 5) 3d8+5 bludgeoning damage. The target must succeed on a DC 16 Strength saving throw or be knocked prone. Ring of Destruction (Recharge 5-6). The ring servant discharges a spinning ring of magical energy. Each creature within 20 feet of the servant must make a DC 16 Dexterity saving throw, taking 45 (10d8) 10d8 force damage on a failed save, or half as much damage on a successful one.