Adamantite Dragon

Uniquely, these extraplanar dragons hatch with their adamantite coats fully formed, which explains their superb armor class from birth. The silver hide casts dazzling beams and rainbows that soothe the good and pain those who lurk in evil's shadows. They speak their own tongue and that of good dragons, add common by juvenile age (category 4), and from adulthood (category 6) have a 50% chance to know any dragon language.

Loving physical combat, they gain the extra dragon attacks such as wing buffet and foot stomp an age category sooner than other dragons do.

Their usual breath is a cone of magical fire 110 feet long, 10 feet wide at the mouth and 45 feet at the end that ignites even nonflammable materials. A second breath of the same shape creates time stop: those caught save vs. spell or are affected as by that spell at 20th level. This one works only on their home plane, a twin paradise in the upper planes, while defending it, and only once per day.

Spell-like powers: polymorph self three times daily (permanent, with free reversion), magic missile with five missiles per round (adult and up) and blink (mature adult and up). Their planar nature makes them immune to nonmagical weapons.

Self-appointed guardians of their paradise, they are goodness personified and will sacrifice anything for the good of thinking beings, helping any intelligent creature in need. They care nothing for law or chaos, only for protecting sentient life.

Though they fill little ecological niche, they are hearty, greedy hunters and see nothing wrong with eating unintelligent creatures.