As a bonus action you may transform your Nephilim into a hybrid state. In this form every weapon attack deals an additional 1d8 radiant or necrotic damage depending on your choice at the time of transforming, damage type cannot stack. Requires a long rest after use.

Thanks to your nephilim blood, 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.

Because of your otherworldly heritage a Nephilim automatically has unnatural strength and charisma.

You receive a +1 to both your Strength and Charisma score as well as one other ability score of your choice.

Because of your heritage you can speak, read, and write in Common Celestial and Infernal

You know the dancing lights cantrip. When you reach 3rd level, you can cast the hellish rebuke 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 mass cure wounds 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.

Thanks to your nephilim blood you have resistance to necrotic damage and radiant damage.