Surf's Up

You lunge forward, arms wide, and then swing them forward into a pushing motion, sending a wave of seawater splashing down in a five ft. cube within range. A creature in that area must make a Dexterity saving throw. On a failed save, a creature takes 1d8 bludgeoning damage, is knocked prone, and its clothes (if wearing any) are completely soaked in seawater. On a successful save, a creature takes half as much damage and isn’t knocked prone, but its clothes (if wearing any) are half-soaked in seawater. In both instances, the water then spreads out across the ground in all directions, extinguishing unprotected flames in its area and within 10 feet before drying up, though any clothing soaked by this cantrip remains soaked until the end of a long rest.