Hellish Hennin

Wondrous item, uncommon (requires attunement)

While wearing this hennin, you gain a +1 bonus to any Charisma check you make when interacting with fiends. In addition, you can use an action to cast the produce flame cantrip from it, using a spell attack bonus of +5. When you do, the spell ignores resistance to fire damage (but not immunity) if the target is a fiend, and the flame smells faintly of brimstone.

If you're a tiefling, the hennin's bonus to interact with fiends increases to +3. Furthermore, when you cast the produce flame cantrip from the hennin, it uses your level and spell attack bonus; the spellcasting ability is the same one used for other spells gained from your Infernal or Fiendish Legacy trait.

The world may call me fiend, but I shall show that even hellfire can light a kindly hearth.