Darkfire

You summon magical darkfire that engulfs your arm. As part of casting this spell you may strike with the engulfed arm and make a melee spell attack, or hurl a ball of darkfire at a target within 30ft and make a ranged spell attack. If either hits, the target takes 2d8 fire damage. This damage ignores fire resistance, but not fire immunity. For the duration of the spell you may repeat this attack as an action on your turn.

If you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d8 per slot level above third.