Dragonfire Strike

Wreathing your weapon in draconic fire, you make an attack with the weapon used in the casting of the spell. The attack uses your spellcasting ability for the attack and damage rolls instead of using Strength or Dexterity. If the attack deals damage, it can be Fire damage or the weapon’s normal damage type (your choice).

Cantrip Upgrade. Whether you deal Fire damage or the weapon’s normal damage type, the attack deals extra Fire damage when you reach levels 5 (1d6), 11 (2d6), and 17 (3d6).