Ancient Moonstone Dragon

(Fizban's Treasury of Dragons)

Gargantuan dragon, Neutral

Armor Class20 (natural armor)
Hit Points330 (20d20 + 120)
Speed40 ft., fly 80 ft.
STRDEXCONINTWISCHA
22 (+6) 18 (+4) 23 (+6) 20 (+5) 22 (+6) 26 (+8)
Saving ThrowsCha +15, Int +12, Wis +13
SkillsPerception +13, Persuasion +15, Stealth +11
Damage Vulnerabilities—
Damage Resistances—
Damage Immunities—
Condition Immunitiescharmed
Sensestruesight 120 ft., passive Perception 23
Languagesall, telepathy 120 ft.
Challenge21

Traits

Legendary Resistance (3/Day).

If the dragon fails a saving throw, it can choose to succeed instead.

Actions

Multiattack.

The dragon makes one Bite attack and two Claw attacks.

Bite.

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

Claw.

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

Tail.

Melee Attack Roll: +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.

Legendary Actions

Tail.

The dragon makes one Tail attack.

Cast a Spell (Costs 2 Actions).

The dragon uses Spellcasting.

Spellcasting

The dragon casts one of the following spells, requiring no material components and using Charisma as the spellcasting ability (spell save DC 23):

At will: faerie fire

2 each/day: calm emotions, dispel magic, invisibility, revivify