Charging Bolt

You charge up, releasing a bolt of lightning on target creature within range. Make a ranged spell Attack against the target. On a hit, the target takes 3d6 lightning damage and you gain three d6 discharge dice. For the next minute, you spend a discharge dice at the start of each turn. The closest creature within 30 feet takes the spent discharge dice's damage unless it succeeds on a Dexterity saving throw.

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