Umbral
An Umbral is one who was born with a deficiency in Aether. This deficiency causes a magical and natural phenomenon where one's soul and body is momentarily shifted to a separate dimension in order to fill the amount of aether needed for life, and back to the real world, in the blink of an eye. This results in a unique being, with dark blue skin, that is constantly glitching and shifting in and out of the real world and the Aether plane. Umbrals can control their shifting back and forth by their late teens, and gain the ability to shift back and forth voluntarily, making them able to technically teleport or blend into shadows.
+Ability – Plane Shift: Teleports to a place you can see using a bonus action up to 3 times per short rest.
+Passive – Plane Hide: Becomes invisible if standing in shadows, cover, or dim light for over a turn.
Disadvantage on rolls against any realm-based ability, spell or class.
Takes higher damage in sunlight
May disappear into another plane momentarily if critical hit into critical health.