Aetherborn Step

As a bonus action, Aetherborn Elves may walk along the rift between the material plane and the ethereal plane in order to teleport up to 30 feet to a point they can see within range. Any creature within 5 feet of the caster at the point they teleport to must succeed a charisma saving throw or become ethereal until the end of their next turn. While they are ethereal they are unable to harm other creatures or be harmed by other creatures. This ability can be used once per short rest.