Wagoneer's High Pressure Wash

You spray a high pressure water jet at 1 target.

Target needs to pass a STR save or take 1d4+spellcasting modifier bludgeoning damage and get knocked back 10 feet and go prone.

With a successful save, target instead takes 2d4+spellcasting modifier bludgeoning damage but receive no knockback.

Caster may chose if the water is soapy, in which case the ground in a 10ft square centered on the target becomes difficult terrain, or not.