You target a creature within 15 feet of a source of air, earth, fire, or water. The elemental source lashes out at the target and the target must make a Dexterity saving throw suffer an effect effect based on the chosen elemental source:

Air. The target takes 1d6 slashing damage and is pushed up to 10 feet in any direction of your choice.

Earth. The target takes 2d4 bludgeoning damage and the target’s space becomes difficult terrain.

Fire. The target takes 1d6 fire damage and starts burning.

Water. The target takes 1d6 cold damage and its speed is reduced by 10 feet until the end of its next turn.

Cantrip Scaling. The spell can target an additional creature within range when you reach higher levels: up to two creatures at 5th level, up to three creatures at 11th level, and up to four creatures at 17th level. Each additional target must be with 5 feet of at least one other target of the spell, and you must use choose the same elemental source for each target.