Energy Surge

A crackling beam of energy bursts from you in a line 30 feet long and 5 feet wide in a direction you choose. Each creature in the line must make a Dexterity saving throw. On a failed save, a creature takes 2d8 lightning damage and it can’t take reactions until the start of its next turn. On a successful save, a creature takes half as much damage and can take reactions as normal.

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.