Elrin's Shock Bolt

A flash of lightning streaks, from your hand, towards a creature of your choice within range. Make a ranged spell attack against the target. On a hit, the target takes 4d6 lightening  damage, and must make a constitution saving throw. On a fail, the creature had disadvantage on their next Dex. Save or next melee attack.

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.