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

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

Multiattack. The dracolich can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.

Acid Bite. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 15 (2d10 + 4) piercing damage plus 5 (1d10) acid damage. If the target is wearing metal armor or a metal shield, it takes a permanent and cumulative −1 penalty to the AC it offers. Armor reduced to an AC of 10 or a shield that drops to a +0 bonus is destroyed.

Paralyzing Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 14 (2d6 + 7) slashing damage. If the target is stunned, it must make a DC 13 Constitution saving throw or become paralyzed until the end of the dracolich's turn.

Frightful Presence. Each creature of the dracolich’s choice that is within 120 feet of the dracolich and aware of it must succeed on a DC 16 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, 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 the dracolich’s Frightful Presence for the next 24 hours.

Salt Breath (Recharge 5–6). The dragon exhales a hail of white salt in a 90-foot cone that crusts over creatures in the area, smelling strongly of chlorine. Each creature in the cone must make a DC 14 Dexterity saving throw, suffering vulnerability to acid damage for the next minute on a failed save. A creature with resistance to acid damage instead has that resistance negated for the next minute.

Flesh Melting Breath (Recharge 5–6). The dracolich exhales acid in a 90-foot line that is 5 feet wide. Each creature in that line must make a DC 14 Dexterity saving throw, taking 49 (11d8) acid damage on a failed save, or half as much damage on a successful one. A creature that fails this save by 5 or more suffers deformities, and has disadvantage on ability checks, saving throws, and attacks based on Strength or Dexterity. The deformity effect can be reversed by a Greater Restoration or Regenerate spell.

Wilting Glare. As a reaction to being struck with an attack, the dracolich may force the attacker to make a DC 13 Constitution saving throw or be stunned until the end of the dracolich's next turn.

Cruel Jest. As a reaction when a creature attempts to leave the dragon's reach, the dragon may force it to make a DC 12 Dexterity saving throw or be dragged 10 feet back towards the dragon. If the creature fails this save by 5 or more, this ability does not use the dragon's reaction.