Chaos

Legendary Resistance (5/Day). If Chaos fails a saving throw, it can choose to succeed instead.

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

Siege Monster. Chaos deals double damage to objects and structures.

Multiattack. Chaos can use his Frightful Presence. He then makes five attacks: one with his fist, two with its greataxe, two kick attacks.

Greataxe. Melee Weapon Attack: +19 to hit, reach 10 ft., one target. Hit: 36 (4d12 + 10) slashing damage. If the target is a creature, it is prone (DC 20).

Punch. Melee Weapon Attack: +19 to hit, reach 15ft., one target. Hit: 28 (4d8 + 10) bludgeoning damage. If the target is a creature, it must succeed on a DC 20 Strength saving throw or be knocked back 60ft

Kick. Melee Weapon Attack: +19 to hit, reach 20ft., one target. Hit: 24 (4d6 + 10) bludgeoning damage. If the target is a creature, it must succeed on a DC 25 Strength saving throw or be knocked prone.

Frightful Presence. Each creature of Chaos' choice within 120 feet of it and aware of it must succeed on a DC 25 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, with disadvantage if  Chaos is within line of sight, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to Chaos' Frightful Presence for the next 24 hours.

Chaos can take 5 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. Chaos regains spent legendary actions at the start of its turn.

Attack. Chaos makes one greataxe attack, one kick attack.

Move. Chaos moves up to half its speed.

Punch (Costs 2 Actions). Chaos makes two punch attacks.