Tempest Bolt

A streak of lightning leaps from your hand to one target creature in range. The target creature must make a dexterity saving throw, taking 3d8 lightning damage on a failed save or half as much on a successful one. The lightning strikes with a bright, sudden flash. If the target failed its saving throw it is also blinded until the end of your next turn.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d8 for each slot level above 1st.