The Purists

The purists are an alien species to Valorstell who have visited off and on over the last three ages of mortality. The purists have a singular mission: to ensure that life continues on. To this end they do not interfere with mortal affairs. Rather, they collect blood samples from every new species that comes to be, so that should life become extinct, they can recreate it and give the material plane a continued fighting chance.
Some purists see this practice as immoral and choose to leave and live among the common folk of the material plane. Purists who do this do so most often out of an anthropological purpose, often studying the cultures they get to experience and in some cases they are so enamored by the peoples they meet they just remain with them for the rest of their days 'retiring' from the old ways of colony. When on the material plane, they do not refer to themselves as a particular species. Some, the descendants of those who leave, may not even know they are purists.
The Purists who remain however tend to see themselves as above and superior to the mortal races.

Your purist character has the following racial traits. (Adapted from Vedalken)
Ability Score Increase Your Intelligence score increases by 2, and your Wisdom score increases by 1.
Age Vedalken mature slower than humans do, reaching maturity around age 40. Their life span is typically 350 years, with some living to the age of 500.
Alignment Vedalken are usually lawful and non-evil.
Size Tall and slender, Vedalken stand 6 to 6½ feet tall on average and usually weigh less than 200 pounds. Your size is Medium.
Speed Your base walking speed is 30 feet.
Vedalken Dispassion You have advantage on all Intelligence, Wisdom, and Charisma saving throws.
Tireless Precision You are proficient in one of the following skills of your choice: Arcana, History, Investigation, Medicine, Performance, or Sleight of Hand. You are also proficient with one tool of your choice.
Whenever you make an ability check with the chosen skill or tool, roll a d4, and add the number rolled to the check’s total.
Languages You can speak, read, and write Common, Vedalken, and one other language of your choice.
Partially Amphibious By absorbing oxygen through your skin, you can breathe underwater for up to 1 hour. Once you’ve reached that limit, you can’t use this trait again until you finish a long rest.