Lightning Bolt

A stroke of lightning forming a line 100 feet long
and 5 feet wide blasts out from you in a direction
you choose. Each creature in the line must
make a Dexterity saving throw. A creature takes
8d6 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 4th level or higher, the damage increases by 1d6 for each slot above 3rd.