Tsunami Wave

You Conjure up a Tsunami Wave from the ocean and blast it out in a maximum 120ft cone, 5ft per spell level high Wave of water. This spell does 5d12 Bludgeoning Damage but is reduced by 1 for each 1 foot traveled from cast location, Creatures hit by this effect must make a strength saving throw or be pushed 10ft from cast location, targets pushed can be hit again by the wave as they are swept up by it, subsequent hits gain a stacking +1 bonus to the save. Flying creatures will have disadvantage on this save but have the option to become grounded when they are pushed. Succeeding on the initial hit will reduce the damage by 13 minus spell level, succeeding on subsequent hits will cause the prone condition

Loose objects hit by the wave will be swept up and pushed to where the wave ends, open flame and other effects doused by water will be put out by this wave, buildings made with stone or metals will be unaffected, wood building can be collapsed if damage is sufficient (DM's rule)