Enialeigh's Elemental Arrows (Arteria)

You touch a quiver containing arrows or bolts. When a target is hit by a ranged weapon attack using a piece of ammunition drawn from the quiver, the target takes an extra 1d4 of a random elemental damage or you can use it to cast the spell to do 1d6 elemental of your choice. The spell’s magic ends on the piece of ammunition when it hits or misses, and the spell ends when eight pieces of ammunition have been drawn from the quiver.

At Higher Levels.

For quiver: When you cast this spell using a spell slot of 2nd level or higher, the number of pieces of ammunition you can affect with this spell increases by two for each slot level above 1st.

For arrow: When you cast this spell using a spell slot of 2nd level or higher, the damage the spell increases by 1d6 to random, 1d8 to specified for each level above 1st, the AOE goes up to 1d6 to random.