Aquajet

A pounding pulse of water blasts from your palm towards your enemies. Each creature in 30 foot long, 10 foot wide line emanating from you must make a strength saving throw. Each creature takes 2d6 cold damage and is pushed to the end of the line on a failed saving throw, or half as much damage and is not pushed on a successful one.

At Higher Levels
When you cast this spell using a spell slotof 2nd level or higher, the damage increases by 1d6 for eachspell slot level above 1st