Canonne

The most basic ray magic. A ray of raw magical energy shoots out from you in a line, piercing all creatures and small walls.

Each creature within the 90 feet long 5 feet wide area of the line must make a dexterity save. On a failed save, they take 2d10 force damage, or half as much on a successful save.
The ray passes through all creatures and obstacles no thicker than 5 feet.

At Higher Levels
When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d10 for each slot level above 1st.