Enchanted element

You buff one willing creature that you can see. when ever this creature makes a ranged elemental attack before the spell ends, it can target one additional creature. Each creature targeted after the first must make a dex save. One a success the creature takes half damage. This spell can also be used to hit an enemy multiple times causing it to take and extra hit die for each time it is targeted again. 

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, you can target one additional creature for each slot level above 1st.