Burning Impact

Flames wreath around one of your appendages and combust as you try to strike a creature within range. This attack has advantage if the target is not wearing any armor (including mage armor). Make a melee spell attack against the target. On a hit, the target takes 1d8 fire damage.

This spell's damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).