Crashing Waves Smite

The first time you hit with a melee attack during the duration of this spell a spray of water trails from your weapon as you invoke the name of your god. A wave of 10 gallons of water crashes into the target dealing an extra 2d6 cold damage. Additionally all non-magical flames within 10ft of you is extinguished.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the initial extra damage dealt by the attack increases by 1d6 for each slot and the amount of water increases by 10 gallons for each level above 1st level.