Forming a diamond with your hands, you release a powerful amount of energy and pressure directly downwards. Upon casting, you select a 20ft cube area within a 60ft range that you can see. All creatures in the 10ft radius must make a strength save or take 4D6 force damage and be slammed prone to the ground. Flying creatures that fail the save are slammed out of the air and fall damage is calculated per 5ft, rather than 10ft. A successful save results in 1/2 damage and not being knocked prone. Objects that aren't worn or carried and structures automatically fail the save. This effect can be repeated on subsequent turns via another action, so long as concentration is held.