Dark Crystals

Dark crystals are a substance that grows inside every Elemental. They are tiny, black crystals, too small to see or feel.

Physiology
Dark crystals grow with every negative emotion, and especially with trauma, continually all life long. Depending on the amount of trauma they lived through, they will have more or less dark crystals growing in them. They flow through their bloodstream and can be removed through a medical prodecure. However, they will always grow back, and they aren’t harmful even when not removed.

Dark Matter
Dark Crystals in mass form dark matter, a dark material that can be controlled by Dark Types that learned magic. Hundreds of years ago, dark types could even control dark crystals that were still inside the Elemental bodies, and they have been hunted and killed for it. Nowadays, no dark type can control anything but dark matter.

Trivia

 * Witches can learn to control dark crystals inside Elemental's bodies.
 * Dark matter can be bought in bulk from certified shops who ethically source them. Black market dark matter is a huge problem in Phoenie.