Reflective Carapace. Any time Zalgran is targeted by a Magic Missile spell, a line spell, or a spell that requires a ranged attack roll, roll a d6. On a 1 to 5, Zalgran is unaffected. On a 6, Zalgran is unaffected, and the effect is reflected back at the caster as though it originated from Zalgran, turning the caster into the target.

Legendary Resistance (3/Day). If Zalgran fails a saving throw, it instead succeeds.

Magical Attacks. Zalgran's attacks are considered magical.

Limited Magical Immunity. Zalgran can't be affected or detected by spells of 6th level or lower unless it wishes to be. It has advantage on saving throws against all other spells and magical effects.

Innate Spellcasting. Zalgran can innately cast the following spells (DC 28, +19 to hit):

• At Will: Fear, Misty Step, Slow, Stinking Cloud, Thunderwave, Witch Bolt
• 1/Day Each: Circle of Death, Dominate Person, Earthquake, Meteor Swarm, Power Word Kill, Power Word Stun, Prismatic Spray, Wall of Stone

Multiattack: Zalgran can use its Frightful Presence. It then makes four attacks: one with its bite, two with its claws, and one with its tail.

Bite. Melee Weapon Attack: +19 to hit, reach 15 ft., 1 target. Hit: 37 (6d8 + 10) piercing damage.

Claw. Melee Weapon Attack: +19 to hit, reach 15 ft., 1 target. Hit: 38 (8d6 + 10) slashing damage.

Tail. Melee Weapon Attack: +19 to hit, reach 15 ft., 1 target. Hit: 31 (6d6 + 10) bludgeoning damage.

Frightful Presence. Each creature of the dragon's choice that is within 120 feet of the dragon and aware of it must succeed on a DC 28 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 dragon's Frightful Presence for the next 24 hours.

Breath Weapon (Recharge 5-6). Zalgran uses one of its breath attacks.

• Debilitating Breath. All creatures in a 60 foot cone in front of Zalgran make a DC 28 Constitution saving throw. On a failure, a creature is poisoned and stunned for one minute. If a creature fails by 8 or more, it also takes one level of exhaustion. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success, and a creature can not receive exhaustion after the initial saving throw.
• Destruction Breath. All creatures in a 5 by 60 foot line in front of Zalgran make a DC 28 Dexterity saving throw, taking 90 (20d8) force damage on a failure and half as much on a success.

Only one legendary action can be used at a time and only at the end of another creature's turn. A creature regains its spent legendary action at the start of its turn. Zalgran has 3 legendary actions.

Spell Sling (Costs 3 Actions). Zalgran casts one spell.

Warp (Costs 2 Actions). Zalgran casts Misty Step.

Attack (Costs 1 Action). Zalgran makes one attack.

Move (Costs 1 Action). Zalgran moves up to his movement speed without triggering attacks of opportunity.