Keen Senses. The abyss breaker has advantage on Wisdom (Perception) checks that rely on smell or hearing.

Legendary Resistance (1/Day). If The abyss breaker fails a saving throw, it can choose to succeed instead.

Magic Resistance. The abyss breaker has advantage on saving throws against spells and magical effects.

Magic Weapons. The abyss breakers weapon attacks are magical.

Missile Deflector. When struck by a ranged attack the abyss breaker reduces the damage taken by it by (1d20+10). If this reduces the damage to 0 the attack is reflected back to the attacker.

Reactive. The abyss breaker can take two reactions on every round in a combat.

Unarmored Defense. While the abyss breaker is wearing no armor and wielding no shield, its AC includes its Wisdom modifier.

Multiattack. The abyss breaker makes three Unarmed Strikes and uses Quivering Palm (if available).

Unarmed Strike. Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 18 (3d10 + 7) bludgeoning damage.

Quivering Palm (Recharge 6). Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: The target must make a DC 18 Constitution saving throw. On a failed save, the target is reduced to 0 hit points. On a successful save, the target takes 55 (10d10) necrotic damage (creatures with legendary actions automatically pass this save).

Advantageous Strike. Whenever an attack misses the abyss breaker it can make one unarmed strike.

Parry. The abyss breaker adds 3 to its AC against one melee attack that would hit it and makes an unarmed strike.

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

Quick Step. The abyss breaker moves up to its speed without provoking opportunity attacks.

Unarmed Strike. The abyss breaker makes one unarmed strike.