Multiattack. The dragon makes one Bite attack and two Claw attacks.

Bite. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 16 (2d10 + 5) piercing damage plus 7 (2d6) radiant damage.

Claw. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 12 (2d6 + 5) slashing damage.

Tail. Melee Weapon Attack: +10 to hit, reach 15 ft., one target. Hit: 9 (1d8 + 5) bludgeoning damage. If the target is a creature, it must succeed on a DC 18 Strength saving throw or be knocked prone.

Breath Weapon (Recharge 5–6). The dragon uses one of the following breath weapons:

• Dream Breath

  The dragon exhales mist in a 90-foot cone. Each creature in that area must succeed on a DC 18 Constitution saving throw or fall unconscious for 10 minutes. This effect ends for a creature if the creature takes damage or someone uses an action to wake it.

• Moonlight Breath

  The dragon exhales a beam of moonlight in a 90-foot line that is 10 feet wide. Each creature in that area must make a DC 18 Dexterity saving throw, taking 49 (9d10) radiant damage on a failed save, or half as much damage on a successful one.

Tail. The dragon makes one Tail attack.

Cast a Spell (Costs 2 Actions). The dragon uses Spellcasting.