Forgotten Feyy

The Feyy are a novel alien species that visits Euphorion every 3000 years. The crystal stone around their neck is unbelievably powerful. If broken it can collapse worlds. Every Feyy is given a crystal at birth and has the facility to merge with different living beings therefore finding a Feyy out of camouflage is extremely rare. They are symbiotic with their hosts and might imbue them with wild abilities.