Deep Blue Sky

suck the moisture from the air let all bear witness to your power and might summoning 

summon a  25m by 25m cube of water 30 meters in the air.

the water then falls dealing 1d8+1d12 blugning damage plus your spell casting ability.

all enemey are viloanty smashed/pinned to the floor becoming prone the water residue will spawn  4 tidal waves of that water will travel and pick up enemy to  be moved with the the water 40 feet in the direction of the wave  this makes the terrain slippery giving buff to lighting and ice damage while debuffing fire damage.