The Tannin Dragon are the most common Dragon Species on Laramidia, and on some parts of Appalachia. In modern times they are usually seen in 1 of 16 elemental variants:
(Light, Crystal, Wind, Sound, Wood, Poison, Water, Ice, Shadow, Phantom, Earth, Metal, Psionic, Fear, Fire, or Lightning)
obtained through a ritual of exposing their eggs to the Moon for an extended period of time and allowing them to absorb the elemental magic associated with each lunar phase.

Otherwise Elemental power does not come naturally to them. Without exposure to the moon they still absorb ambient energy from nature, and may even take on qualities of magical sources they are exposed to while developing and then can direct that energy through their body to enhance their physical strength, durability, stamina, senses, and reflexes, or they can project non-elemental energy outwards as a Breath, Beam, or Pulse.

This is mostly a lost art of Ancient Laramidian Tannin now since Elementless Tannin have become rare the teachings that would have trained them to use their natural energy has fallen into irrelevance and many have forgotten they have powers aside from elemental.

The Appalachian Tannin while less populous have gone a different direction from their Laramidian cousins. Their cultures spit off long before the Laramidian Tannin discovered the Lunar Ritual, so they don't know the Lunar Ritual but they do know that sources of magical power have an effect on their eggs development so they have their own rituals that are unique but still practice their own natural ability.