When you succeed on a death save, you can regain a number of hit points equal to your proficiency bonus + your Intelligence modifier. You can’t use this trait again until you finish a long rest.

You know the sacred flame cantrip. Intelligence is your spellcasting ability for it. When you reach 3rd level, you can cast the Magic Missile spell once with this trait and regain the ability to do so when you finish a long rest. When you reach 5th level, you can cast the Blur spell once with this trait and regain the ability to do so when you finish a long rest. Intelligence is your spellcasting ability for these spells. You can also cast these spells using spell slots of the required level.

You have proficiency with the longsword, shortsword, shortbow, and longbow.

Your Dexterity score increases by 2 and your Intelligence score increases by 1.

Astral Entities stop aging around 20-30 years of age, at which state they continue to live, presumably for the rest of eternity. Astral Entities are not affected by old age nor spells that cause aging.

Astral Entities range from under 5 to over 6 feet tall and have slender builds. Your size is Medium.

You do not walk, but levitate off the floor. Your speed is 30 feet, and you can only fly up to 10 feet in the air.

Accustomed to twilit forests and the night sky, you have superior vision in dark and dim conditions. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.

You have proficiency in the Perception skill.

You do not need to breathe, drink, or eat, and can exist in the vacuum of space. You have advantage against being charmed, and magic cannot put you to sleep.

Astral Entities don’t need to sleep. Instead, they meditate deeply, remaining semiconscious, for 4 hours a day. (The Common word for such meditation is “trance.”) While meditating, you can dream after a fashion; such dreams are actually mental exercises that have become reflexive through years of practice. After resting in this way, you gain the same benefit that a human does from 8 hours of sleep.

Astral Entities can also choose to enter a deep sleep for an indefinite amount of time, during which they are unaware of their surroundings and are encased in energy crystals which have an AC 10 and 20 HP. In this state, their speed becomes 0 and they are resistant to all damage except psychic. They cannot take actions in this state, and can only be awakened if the crystals are broken.

You can speak, read, and write Celestial and Elvish. Due to your ancient heritage, you only initially speak ancient dialogues and are unfamiliar with common.