Droplet

Evocation Cantrip (Druid, Wizard)
Casting Time: 5 Minutes
Range: 120 feet
Components: VS
Duration: up to 5 minutes
You call upon a small cloud to rain down on a location that you choose within range. it rains in a 5-foot cylinder centered on the point you choose. You may have the cloud follow a creature in the tile when it moves as a bonus action. The area is lightly obscured for the duration and is considered difficult terrain. The spell lasts for the duration, or until you end it as an action.

At Higher Levels. The area increases by 5 feet when you reach 5th level (10 feet), 11th level (15 feet), and 17th level (20 feet).