Eledraan dragon, feeds off of magic and harnesses one or, uncommonly, two elements to protect their land and friends. The orbs is where the magic is stored and contains pure magic, brightly glowing orbs show they're healthy and is what allows them to control elements. Magic also helps them fly, but it drains their energy quickly. They start training their magic abilities at a young age, to increase their orb capacity and power.
However, if they consume too much magic they will no longer be able to control what they do with it, this may cause the magic to become harmful to them or others. When they need to feed or become sick, the orbs will show that by slowly losing their brightness. When they die, the orbs will stop glowing and eventually vanish, releasing the magic into the air.