Acid Arrow

Ranged spell
One nearby or far away creature
Intelligence + Level vs. PD
4d10 acid damage, and 5 ongoing acid damage.
5 ongoing acid damage, and you regain the spell during your next quick rest.
3rd Level Spell: 
5d10 damage, and 10 ongoing damage; 10 ongoing on a miss.
5th Level Spell: 
8d10 damage, and 15 ongoing damage; 15 ongoing on a miss.
7th Level Spell: 
3d4 x 10 damage, and 25 ongoing damage; 25 ongoing on a miss.
9th Level Spell: 
5d4 x 10 damage, and 40 ongoing damage; 40 ongoing on a miss.