The Realm of the shattered storm

You scatter a two hundred pieces of silver in the air around you, floating in the air, after which a copper helix begins spinning violently above you within the cloud of silverpieces. You present the life that channels the spell and white lightning cascades from the helix and throughout the cloud of silver. You then bring your hands together, and with a clap, all weather is sapped from the sky within 5 miles of you for the duration.

You amass a storm in a radius of 30 ft around you. The area is considered lightly obscured and rough terrain, a creature starting its turn there has to make a dexterity saving throw. a creature takes 4d12 points of lightning damage, is knocked prone and pushed 10 ft. out of the storm, on a succesful save a creature only takes half as much and isnt knocked prone or pushed.

At the start of each of your turns, you can evoke the power of the storm causing one of the following effects:

• You cause an amount of creatures up to your spellcasting ability modifier (to a minimum of 1) to have to make a strength saving throw. On a failed save a creature Takes 8d8 thunder damage and is thrown 60ft in a direction of your choice, on a succesfull save they take half as much and not is not thrown.
• You cause a rippling wave of raucous thunder to move in a 60ft cone originating from an edge of the storm, a creature caught in the cone take 15 points of thunder damage and is deafened until the end of your next turn.
• You create three strokes of lightning that emit from within the storm in a 120ft long, 5ft wide line. A creature caught in any of the three lightning bolts has to make a dexterity saving throw. On a failed save a creature takes 9d8 lightning damage, taking half as much damage on a succes. (A creaure cannot take this damage more times by being hit by more bolts).
• You cause a power gale of wind to emit within a 30ft square within 300ft. of you until the end of your next turn. You cause the wind in that square to blow strongly in any direction. A willing creature may be moved to the outer edge of the 30ft square by the wind or after a failed strength saving throw. If a creature is forced into a solid surface by this effect, their movement speed is reduced to 0. All non-magical ranged weapon attacks made within the square automatically fail.