Discharge

You point your finger towards one creature that you can see within range. The target is spontaneously damaged by a powerful electrical discharge. A creauture must succeed a Constitution saving throw or it takes 3d6 lightning damage and has disadvantage on their next attack roll. On a successful save a creature only takes half damage.

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.