race features:
Hellish Fury. You are able to ignite your weapon and have it deal additional fire damage equal to your Charisma or Wisdom modifier which ever is higher.
Legacy of Avernus. You know the thaumaturgy cantrip. When you reach 3rd level, you can cast the searing smite 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.