Essence Transfusion, The Dark Ritual

Essence of other racial magic has been infused into you via a dark ritual, often used to save a life, or bring one back. Partial or total death has made you a Reborn being. You gain qualities of what or who was merged into you, Including appearance, potentially givng you a completely new identity. This allows you to count as another race as well as a Reborn for any prerequisites. 

Due to residual essence of your's and the transfused, you gain the ability to change your characteristics (Alter Self).

Exposure to the occult magic has changed you, granting you the following benefits:

• Increase your Intelligence, Wisdom, or Charisma score by 1, to a maximum of 20.
• You learn one 1st-level spell of your choice. The 1st-level spell must be from the illusion or necromancy school of magic. You can cast each of these spells without expending a spell slot. Once you cast either of these spells in this way, you can’t cast that spell in this way again until you finish a rest. You can also cast these spells using spell slots. The spells’ spellcasting ability is the ability increased by this feat.