19
Ancient Crystal Dragon
Fizban's Treasury of Dragons
Dragon
(gem)
Gargantuan
Typically Chaotic Neutral
21
Ancient Emerald Dragon
Fizban's Treasury of Dragons
Dragon
(gem)
Gargantuan
Typically Lawful Neutral
22
Ancient Sapphire Dragon
Fizban's Treasury of Dragons
Dragon
(gem)
Gargantuan
Typically Lawful Neutral