Arrow of the Sun

This is pretty much just lightning arrow but for new classes. The initial hit does 3d4 Radiant and anything within 10 ft. of the target must make a Dex saving throw or take 1d4 force damage or half as much on a success, taking half damage rounded down (unless the damage would end up being less than 1)

The weapon or ammunition then returns to its normal form.

Using a Higher-Level Spell Slot. The damage for both effects of the spell increases by 1d4 for each spell slot level above 1.