Infernal Legacy
You are the product of fiendish intervention. As you grow stronger, the power associated with your fiend awakens. At first, third, and fifth character level you gain spellcasting abilities.
You can cast each spell granted by your legacy once without a spell slot, and you regain the ability to cast it in that way when you finish a Long Rest. You can also cast the spell using any spell slots you have of the appropriate level. Intelligence, Wisdom, or Charisma is your spellcasting ability for the spells you cast with this trait (choose the ability when you select the ancestry).
Choose one of the following:
Balor's Flame. You know the produce flame cantrip. Once you reach 3rd level, you can cast the faerie fire spell. Once you reach 5th level, you can cast the flame blade spell.
Erinyes' Tongue. You know the vicious mockery cantrip. When your reach 3rd level, you can cast the charm person spell. When you reach 5th level, you can cast the enthrall spell.
Rakshasa's Blood. You know the thaumaturgy cantrip. Once you reach 3rd level, you can cast the hellish rebuke spell. Once you reach 5th level, you can cast the darkness spell.
Ultroloth's Will. You know the vine whip cantrip. When your reach 3rd level, you can cast the command spell. When you reach 5th level, you can cast the suggestion spell.