Tidal Spear

You cup your hands together and release a highly-pressurized stream of water, cleaving through targets with wild abandon. A pressurized line of piercing water shoots forward, 30 feet long and 5 feet wide. Each creature in that line must make a Dexterity saving throw. A creature takes 3d12 piercing damage and is pushed away from the user by 15 feet on a failed save, or take half as much damage and are not pushed back 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 1d12 for each slot level above 3rd.