Dissonant Bladesinging

You whisper a discordant melody that creatures of your choice within range can hear, wracking them with terrible pain. The targets must make Wisdom saving throws. On a failed save, affected creatures takes 1d6 psychic damage and their speed is halved while in the area of effect.  On a successful save, affected creatures takes half as much damage and their movement is unaffected. A deafened creature automatically succeeds on the save.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d6 for each slot level above 1st.