Beast Switch

You reach out to your foe speaking a word of power which instantly transforms a living creature into a small animal for a few seconds (Constructs and Undead are immune to this spell).  The transformation is so traumatic that the target takes [2d8] psychic damage, and they flee in panic 5ft directly away from you knocking them prone.  The creature cannot take reactions until the beginning of their next turn.  A successful saving throw vs Constitution reduces the damage by half and prevents all other effects of this spell.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, you can affect one additional creature for each slot level above 1st. The creatures must be within touch range when you cast the spell.