Aura Burst

You point your finger, and the creature that damaged you is momentarily surrounded by bolts of crackling electricity. The creature must make a Constitution saving throw. It takes 2d10 lightning damage on a failed save, or half as much damage on a successful one. As an added effect if a creature attempting a save versus this spell rolls a Natural 1, the creature is Stunned.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d10 for each slot level above 1st.