Burst Lightning

As you hold your hand out, arcane energy crackles around your hand, and short burts of lightning shoots forth from your outstretched fingertips. Choose a point within range, all creatures within 5ft of that point must make a dexterity saving throw. A creature takes 3d6 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 1d6 for each slot level above 1st.