Arrisa's Aqua Jet

You focus on a target you can see withing 90 feet and conjure a sphere compressed water that fires a blindingly fast line of high prassure fluid that drills through everything in a  5-foot wide 90-foot long line line. Each creature in the line must make a Dexterity saving throw. A creature takes 1d8 + your spell casting modifier piercing damage on a failed save, or half as much damage on a successful one.

Targets hit by this spell gain a weakness to cold damage for one round. 

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, you create one additional sphere for each slot level above 1st and may choose an additional target.