Crystal Flame

You hurl a "x" of flaming crystals at a creature or object within range. Make a ranged spell attack against the target. On a hit, the target takes 1d8 fire damage and 1d8 slashing damage. 

This spell's damage increases by 2d8 when you reach 5th level (4d8), 11th level (6d8), and 17th level (8d8).