Thundering Rebuke

You point your finger, rechanneling the damage you've taken, and a streak of lightning flashes off of it piercing the creature that damaged you. The creature must make a Dexterity saving throw. It takes 2d10 lightning damage on a failed save, or half as much damage on a successful one.

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.

"Fire is too imprecise for my tastes. I'd rather rely on a single, well-placed bolt of lightning."

- Lyrus, Sea Gate wizard