Multiattack

The dragon uses its Aura of Madness. It then makes one Bite attack and two Claw attacks.

Bite

Melee Weapon Attack: +16 to hit, reach 15 ft., one target. Hit: 20 (2d10 + 9) piercing damage plus 14 (4d6) cold damage.

Claw

Melee Weapon Attack: +16 to hit, reach 10 ft., one target. Hit: 16 (2d6 + 9) slashing damage.

Tail

Melee Weapon Attack: +16 to hit, reach 20 ft., one target. Hit: 18 (2d8 + 9) bludgeoning damage.

Aura of Madness

Each creature of the dragon's choice that is within 120 feet of the dragon and aware of it must succeed on a DC 18 Wisdom saving throw or suffer short-term madness 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 Aura of Madness for the next 24 hours.

Breath Weapons (Recharge 5-6)

The dragon uses one of the following breath weapons.

Gravitic Breath

The dragon exhales localized gravity in a 90-foot cube, originating from the dragon. When a creature ends a fall in the cube, it takes 1d10 bludgeoning damage for every 10 feet it fell, to a maximum of 20d10. A creature that enters the cube for the first time on a turn or starts its turn there must make a DC 24 Dexterity saving throw. On a failure, the creature is restrained. On a success, the creature's speed is halved as long as it remains in the cube. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. The cube lasts for 1 minute.

Stellar Breath

The dragon exhales star fire in a 90-foot cone. Each creature in that area must make a DC 24 Dexterity saving throw, taking 42 (12d6) fire damage and 42 (12d6) radiant damage on a failed save, or half as much damage on a successful one.