Etherborn

Description When a child is born near a surge of ether energy, there is a chance that the child might become imbued with the ethereal energy. The child has the appearance of whatever race it is born as and gain most of the general traits like age, alignment, ability score improvements (Humans get +1 to two different attributes), size, darkvision (if any), language and speed. Special abilities granted by race however are not and is changed to the Etherborn abilities. The Etherborn will through childhood develop several ethereal traits. Several Etherborn gain blue tinted hair, light blue eyes or slight shimmer to their movements as their body start transcending to another plane.
The Etherborn have a tendency to become outcasts due to their rare nature. Several entities hunt Etherborn for their blood to use in concoctions and rituals, so many Etherborn become hermits or vagabonds, seldom revealing their true identity to others. The fear of being found by The Coalition or The Chromatic Order means that many parents to Etherborn children skip town or abandon them. So there is a tendency for these children to grow up as urchins or charlatans often working in brothels or in shady bars to get by. Etherborn children that grow up with parents around their own community tend to take on the culture and etiquette of said culture. So an elven Etherborn will act elven or a dwarven Etherborn will act Dwarven and have a name appropriate to their feign race.
Traits
Ethereal Existence: An Etherborn has the ability to evade attacks by entering the ethereal plane. As a reaction to being hit with an weapon or spell attack the Etherborn enters the ethereal plane for but a second evading all damage. This feature is regained when finishing a long rest.
Soul Bound: The Ethereal body is stronger for Etherborn than for other races and so have a higher chance of escaping a deadly blow that would wound the soul. When roling death saving throws you gain advantage one the first saving throw you roll. This feature can only be used once and is regained every 3 days.
Tight Tether: Abilities that would involuntary move you, like the push attack, or being grappled by a large or smaller creature is lessened by 10 feet due to your strong ethereal tether.