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

Bite. Melee Weapon Attack: +13 to hit, reach 15 ft., one target. Hit: 17 (2d10 + 6) piercing damage plus 11 (2d10) radiant damage.

Claw. Melee Weapon Attack: +13 to hit, reach 10 ft., one target. Hit: 13 (2d6 + 6) slashing damage.

Tail. Melee Weapon Attack: +13 to hit, reach 20 ft., one target. Hit: 10 (1d8 + 6) bludgeoning damage. If the target is a creature, it must succeed on a DC 21 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 21 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 120-foot line that is 10 feet wide. Each creature in that area must make a DC 21 Dexterity saving throw, taking 60 (11d10) 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.