Fragmented Soul (Devil)

A devil traps a piece of your soul, you gain the following:

• Decrease your Constitution score by 1, to a minimum of 1.
• You gain an advantage on your (Persuasion) checks.
• Whenever you make a melee, ranged, or spell attack, you may call upon your soul fragment to add an additional 1d4 fire damage. If you do so, you suffer the same fire damage ignoring fire resistance and immunity