Starting at 3rd level, you can use your bonus action to unleash the corrupted divine energy coursing through your veins, causing your body to shimmer and two wings to sprout from your back.

These wings, though once feathered and beautiful, have since been destroyed by the influence of darkness. Because of this, they now appear distorted, torn, and demonic in appearance compared to how they were before. Your transformation lasts until you end it using another a bonus action. During it, you have a flying speed of 30 feet.

Many Corrupted Aasimar feel shame or disgust towards their wings for their distorted state, so most transformations are induced involuntarily via extreme emotional outbursts (much like a barbarian's rage) rather than by choice. This transformation process is now painful to you due you your exposure to dark forces. When you transform, your wings violently tear through your skin, causing you to take 1d4 piercing damage. When forcing your wings back into your flesh, you take another 1d4 piercing damage.

When you reach 3rd level, you can cast the hellish rebuke spell as a 2nd-level 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. 

Your Charisma score increases by 2.

Aasimar mature at the same rate as humans, but they can live up to 160 years.

Aasimar have the same range of height and weight as humans.

Your base walking speed is 30 feet.

Blessed with a radiant soul, your vision can easily cut through darkness. 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 resistance to necrotic damage, but vulnerability to radiant damage.

As an action, you can touch a creature and cause it to regain a number of hit points equal to your level. Once you use this trait, you can’t use it again until you finish a long rest.

You know the Produce Flame cantrip. Charisma is your spellcasting ability for it.

You can speak, read, and write Common and your choice of either Celestial or Infernal.