Sources
CR
Type
Size
Alignment
Movement

Young Crystal Dragon

Large Dragon (gem), Chaotic Neutral

Armor Class 15 (natural armor)
Hit Points 95 (10d10 + 40)
Speed 40 ft., fly 80 ft., climb 40 ft., burrow 20 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
Damage Resistances cold, radiant
Senses blindsight 30 ft., darkvision 120 ft., passive Perception 18
Languages Common, Draconic, telepathy 120 ft.
Challenge 5 (1,800 XP)

Spellcasting

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.

Lore

Shimmering with radiant energy and brimming with life, crystal dragons enjoy an innate psionic connection to the Positive Plane that suffuses their bodies as well as their personalities with light. Though they prefer to live in desolate, frigid regions, many of them are among the friendliest of dragonkind, nurturing and optimistic.