Trixie's Mnemonic Betrayal

You attempt to muddle the mind of a creature in range. The target must make an intelligence saving throw. On a failed save, its mind is muddled over, it's brain processing too many concept. At the start of the creatures turn, choose an action. If the creature does not take that action, it takes 4d6 psychic damage. At the end of the creature turn, it can remake the intelligence saving throw, ending the spell on the success. In addition, it has disadvantage on concentration saves, Creatures without brains are immune to this spell.

At Higher levels: When you cast this spell with a 4th level spell slot or higher, the psychic damage increases by 1d6 for each slot level above 3rd.