Deep Elves; Temperature, poison, and acid impervious, stronger than dragons. Do not have wings, but are unrivaled acrobats when airborne, with superior jumping, falling, and climbing capability. They have impenetrable skin. Born reclusive and are extraordinarily rare for other races to witness. Not common knowledge, even among drow. No rumors of them exist anywhere. All of them are born Receptive Alphas capable of birth, opportunities and interest in breeding are rare. Rarely mate for life, but can do so, and enjoy scent marking permanent mates.Time holds little meaning to them. They are often mistaken for light skinned Drow. (Medieval times, DND-esque high fantasy world.)