Adult Crystal Dragon

(Fizban's Treasury of Dragons)

Huge dragon (gem), Chaotic Neutral

Armor Class16 (natural armor)
Hit Points172 (15d12 + 75)
Speed40 ft., burrow 40 ft., climb 40 ft., fly 80 ft.
STRDEXCONINTWISCHA
21 (+5) 12 (+1) 21 (+5) 18 (+4) 15 (+2) 19 (+4)
Saving ThrowsCha +8, Con +9, Dex +5, Wis +6
SkillsPerception +10, Stealth +9, Survival +6
Damage Vulnerabilities—
Damage Resistancescold; radiant
Damage Immunities—
Condition Immunities—
Sensesblindsight 60 ft., darkvision 120 ft., passive Perception 20
LanguagesCommon, Draconic, telepathy 120 ft.
Challenge12

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: +9 to hit, reach 10 ft., one target. Hit: 16 (2d10 + 5) piercing damage plus 4 (1d8) radiant damage.

Claw.

Melee Attack Roll: +9 to hit, reach 5 ft., one target. Hit: 9 (1d8 + 5) slashing damage.

Scintillating Breath (Recharge 5-6).

The dragon exhales a burst of brilliant radiance in a 60-foot cone. Each creature in that area must make a DC 17 Constitution saving throw, taking 40 (9d8) radiant damage on a failed save, or half as much damage on a successful one. The dragon then gains 15 temporary hit points by absorbing a portion of the radiant energy.

Legendary Actions

Claw.

The dragon makes one Claw attack.

Psionics (Costs 2 Actions).

The dragon uses Psychic Step or Spellcasting.

Starlight Strike (Costs 3 Actions).

The dragon releases a searing beam of starlight at a creature that it can see within 60 feet of it. The target must succeed on a DC 17 Dexterity saving throw or take 31 (9d6) radiant damage.

Spellcasting (Psionics)

The dragon casts one of the following spells, requiring no spell components and using Intelligence as the spellcasting ability (spell save DC 16):

At will: dancing lights, guidance

1 each/day: command, divination, hypnotic pattern, lesser restoration