Arrow of Morbid Curiousity

A glowing black arrow flies at a target within range. Make a ranged spell attack against the target. On a hit, the target takes 1d6 necrotic damage, feeling a slight surge of death in their body before turning back to normal.On a miss, the arrow rapidly ages whatever ground it hits to death. (Plants within 5 feet of the arrow die, water becomes toxic, etc etc.) If anything is standing on that ground, it takes half as much of the damage done. When you reach 5th level the spell does 2d6 damage, when you reach 11th level the spell does 3d6 damage when you reach 17th level the spell does 4d6 damage.