Adult Moonstone Dragon

Huge dragon, Typically Neutral
Armor Class 19 (natural armor)
Hit Points 195 (17d12 + 85)
Speed 40 ft., fly 80 ft.
STR
20 (+5)
DEX
18 (+4)
CON
20 (+5)
INT
22 (+6)
WIS
20 (+5)
CHA
23 (+6)
Saving Throws Int +11, Wis +10, Cha +11
Skills Perception +10, Persuasion +11, Stealth +9
Condition Immunities charmed
Senses blindsight 60 ft., darkvision 120 ft., passive Perception 20
Languages Common, Draconic, Elvish, Gnomish, Sylvan
Challenge 15 (13000 XP)     Proficiency Bonus +5
Legendary Resistance (3/Day).
ACTIONS
Multiattack.
Bite.
Claw.
Tail.
Breath Weapon (Recharge 5–6).
Spellcasting.
LEGENDARY ACTIONS
Tail.
Cast a Spell (Costs 2 Actions).

This full creature's stat block is not available (not OGL).

Moonstone dragons are graceful and elegant creatures with opalescent scales and ruffs of emerald-green fur running down their chins, chests, backs, and tails. One horn arcs from the back of a moonstone dragon's skull and another at the tip of the nose; the two horns together form a shape that's reminiscent of a slender crescent moon. Moonstone dragons are playful and impetuous forces of mischief in their early years, but the best of them mature into wise teachers and storytellers who anchor Feywild communities. The worst of them are pompous and ill behaved, but even those remain gentle by nature and curious about all things—especially travelers from faraway places.
Fizban´s Treasury of Dragons
Adult Moonstone Dragon