Multiattack

Mechuiti can use his Frightful Presence. He then makes one Bite attack and two Claw attacks.

Bite

Melee Weapon Attack: +17 to hit, reach 10 ft., one target. Hit: 31 (4d10 + 9) piercing damage plus 21 (6d6) fire damage.

Claw

Melee Weapon Attack: +17 to hit, reach 20 ft., one target. Hit: 27 (4d8 + 9) slashing damage plus 21 (6d6) fire damage. If Mechuiti scores a critical hit, he rolls damage dice three times, instead of twice.

Frightful Presence

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

Burning Acid Breath (Recharge 5-6)

Mechuiti exhales fire and acid in a 60-foot cone. Each creature in that area must make a DC 24 Dexterity saving throw, taking 49 (14d6) fire damage and 49 (14d6) acid damage on a failed save, or half as much damage on a successful one.

Spellcasting

Mechuiti casts one of the following spells, requiring no material components and using Charisma as the spellcasting ability (spell save DC 22): At will: dispel magic, hold monster, wall of fire 3/day each: fire storm, power word stun