Blood Rain

You create a small storm cloud that rains blood above one enemy of your choice within range. While under the cloud the creature must make a Constitution saving throw at the start of each of their turns or take 2d6 acid damage and 2d6 necrotic damage on a failed save and half as much on a successful save.

When you use a spell slot of 4th level or higher the damage increases by 1d6 for each level above 3rd.