race features:
-Darkvision within 60 feet.
-You are vulnerable to psychic damage.
-You do not need to breathe, and are immune to disease. You do still need to eat, drink, and sleep.
-You can phase through non-magical solid objects and occupied spaces with ease, although you cannot end your turn inside of anything. If you would end your turn while phased inside of something, you take 4d6 force damage and are pushed back to where you were before you phased. You cannot be reduced below 1 hit point by this damage.
-If you are killed, your form disappears, leaving behind no body and dropping anything you were wearing or carrying on the ground where you were killed. But you are not dead; your soul returns to your core mass, and 1d8 days later, you reemerge from the ground where your mass is buried with 3 points of exhaustion. The only way you can be permanently killed is if your core mass is located and destroyed, or if you die from exhaustion.
Somwherians are a strange, spectre-like race of unknown origin. They are the rarest and most mysterious race on Wheria; no one understands why they come to be, or even what they are. A Somwherian's "body" is just some kind of projection; their true essence lies buried extremely deep underground, in hidden, secret locations that are unique to each Somwherian. The projection of a Somwherian's form is transparent and intangible, though it feels vaguely cold, and there is an odd resistance if trying to move through their form. It is also malleable; a Somwherian can alter the way their projected form looks however they wish, although it does need to at least maintain its humanoid arrangement of limbs.