Eladrin

Eladrin are extremely rare in the world of Lanimora.

Eladrin are Elves that are born in a Shade Pocket. They are highly sought after by The Lorekeepers for study and research. They want to experiment on them to find out why an Elf would turn into an Eladrin.

Drusilla's mother (basically a hippie mom), inadvertently walked into a Shade Pocket while pregnant and gave birth to Dru. Being born there is what caused her to become an Eladrin.