Young Crystal Dragon

Large Dragon (Gem), Chaotic Neutral

AC: 15

Initiative: +1 (11)

HP: 95 (10d10 + 40)

Speed: 40 ft., burrow 20 ft., climb 40 ft., fly 80 ft.

STR: 17 (+3)
DEX: 12 (+1)
CON: 18 (+4)
INT: 16 (+3)
WIS: 14 (+2)
CHA: 17 (+3)

Saving Throws: Dex +4, Con +7, Wis +5, Cha +6

Skills: Perception +8, Stealth +7, Survival +5

Resistances: cold; radiant

Senses: blindsight 30 ft., darkvision 120 ft., Passive Perception 18

Languages: Common, Draconic, telepathy 120 ft.

CR: 5 (XP 1,800; PB +3)

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/day each: hypnotic pattern, lesser restoration

Actions

Multiattack.

The dragon makes one Bite attack and two Claw attacks.

Bite.

Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 14 (2d10 + 3) piercing damage plus 4 (1d8) radiant damage.

Claw.

Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) slashing damage.

Scintillating Breath (Recharge 5-6).

The dragon exhales a burst of brilliant radiance in a 30-foot cone. Each creature in that area must make a DC 15 Constitution saving throw, taking 27 (6d8) radiant damage on a failed save, or half as much damage on a successful one. The dragon then gains 10 temporary hit points by absorbing a portion of the radiant energy.

Find this creature in the encounter builder

Source: Fizban's Treasury of Dragons, p. 172 - Licenses and attribution