Wet Willy

You invoke long-forgotten arcane secrets, causing your finger to moisten before you poke your target's ear(or similar orifice) with it. Make a Melee Spell Attack against one creature in range. If you were unseen by the target before the attack: if it hits, the target immediately uses its Reaction to move five feet away from you and is Frightened for on round, on a miss, nothing happens. If you were visible to the target before the attack, it uses its reaction to either move five feet away from you as safely as possible or make an attack of opportunity against you, and you have Disadvantage on Persuasion checks against it for one minute. In either case, if the attack is a critical hit, the target takes spellcasting ability modifier+proficiency Psychic damage. This spell has no effect on undead or constructs, or creatures without ears or similar orifices.

At levels 5, 11, and 17, the distance the target moves is increased by spellcasting ability modifier feet.