Argoth - The Juggernaut

Death Throes. When Argoth dies, it explodes, and each creature within 30 feet of it must make a DC 20 Dexterity saving throw, taking 70 (20d6) fire damage on a failed save, or half as much damage on a successful one. The explosion ignites flammable objects in that area that aren’t being worn or carried, and it destroys Argoth's weapons.

Fire Aura. At the start of each of the Argoth’s turns, each creature within 5 feet of it takes 10 (3d6) fire damage, and flammable objects in the aura that aren’t being worn or carried ignite. A creature that touches the balor or hits it with a melee attack while within 5 feet of it takes 10 (3d6) fire damage.

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

Magic Weapons. Argoth’s weapon attacks are magical.

Legendary Resistance (3/Day). If Strahd fails a saving throw, he can choose to succeed instead.

Multiattack. Argoth makes two attacks: two with Pain, or one with Agony and one with Pain.

Pain (Great Cleaver). Melee Weapon Attack: +14 to hit, reach 10 ft., one target. Hit: 21 (3d8 + 8) slashing damage plus 13 (3d8) fire damage. If Argoth scores a critical hit, it rolls damage dice three times, instead of twice.

Agony (Meat Hook and Chain). Melee Weapon Attack: +14 to hit, reach 30 ft., one target. Hit: 15 (2d6 + 8) slashing damage plus 10 (3d6) lightning damage, and the target must succeed on a DC 20 Strength saving throw or be pulled up to 30 feet towards Argoth and is restrained. At the beginning a creatures turn that is restrained by Agony, they can attempt a DC 20 Constitution saving throw to stop being restrained. Any creature ending it's turn restrained by Agony takes 2d6 piercing damage. Only one creature may be restrained at a time by Agony, attack rolls cannot be made by Agony if it is currently restraining a creature. Argoth may choose to release a creature restrained by Agony as a bonus action.

Teleport. Argoth magically teleports, along with any equipment it is wearing or carrying, as well as any creatures actively restrained by Agony, up to 120 feet to an unoccupied space it can see.

Deadly Shaping (Recharge 5–6). Argoth magically shapes a feature of its surroundings into a deadly implement. A creature Argoth can see within 60 feet of it must make a DC 18 Dexterity saving throw. If the saving throw fails, the targeted creature is struck by one of the following (Argoth’s choice):

Flying Stone. The target takes 22 (5d8) bludgeoning damage and is incapacitated until the start of Argoth’s next turn, and the implement vanishes.

Scything Shrapnel. The target takes 14 (4d6) slashing damage, and the implement vanishes. At the start of each of its turns, the target takes 10 (3d6) necrotic damage from the wound left by the shrapnel. The wound ends if the target regains any hit points or if a creature uses an action to stanch the wound, which requires a successful DC 15 Wisdom (Medicine) check.

Argoth can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. Argoth regains spent legendary actions at the start of its turn.

Implacable Advance. Argoth moves up to its speed, ignoring difficult terrain. Any object in its path takes 55 (10d10) bludgeoning damage if it isn’t being worn or carried.

Rapid Shaping (Costs 3 Actions). Argoth recharges Deadly Shaping and uses it.