You know the light cantrip. When you reach 3rd level, you can cast the healing word spell as a 2nd-level 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 branding smite spell once with this trait and regain the ability to do so when you finish a long rest. Charisma is your spellcasting ability for these spells.

Since you were an angel, and are still half of one, the creatures of the Abyss and the Nine Hells are your natural enemies.  You still suffer trauma from your days waging war against these foul beings and thus are weakened against necrotic damage.

You also have resistance against radiant damage, seeing as you were once immune to it.

Your Strength score increases by 1, your Consitution score increases by 2, your Dexterity score increases by 1.

The lifespan of Fallen Angels is unknown.  You appear on this plane as a toddler and reach maturity at the same age as humans however possess a mature intellect throughout your entire life. No one knows whether they lose their immortality because none have died of natural causes.

Most Fallen Angels are spiteful of those who have wronged them and rarely choose sides when it comes to law and chaos;  However, they tend towards lives abiding by a strict personal code because of their past lives

Fallen Angels are about 6 1/2 feet tall when they reach physical maturity. They have half-angel bodies that weigh between 100 and 300 pounds depending on the physique of the individual. Your size is Medium.

Your base walking speed is 25 feet.

You have a flying speed of 50 feet. To use this speed, you can’t be wearing medium or heavy armor.  Your wings appear as large birds wings, however, they have been known to glow when you are agitated. 

You can speak, read, and write Common, Celestial, and one Language of your choice