Draconic Slur

You speak a word in Draconic into the mind of a target that you can see, and can hear you.  Make a ranged spell attack.  On a hit the target takes 5d10 Psychic Damage and must make a wisdom saving throw or be stunned until the end of its next turn.  A creature that can understand Draconic must make this save at disadvantage.  Once a creature has been the target of this spell it cannot be affected by the spell again for another 24 hours, unless that creature is a dragon.  When you cast this spell at 4th level or higher, the damage increases by 1d10 for each slot above 3rd.