you surround your self in a sphere, made of of all the elements, earth, air, fire, and water. for the duration, you gain the following benefits:

Earth. as a bonus action on each of your turns, you can a rock from your sphere. choose a creature within 120 feet of you, and make a ranged spell attack against that creature. on a hit, you deal 3d10 bludgeoning damage. the sphere has 5 rocks. after firing all of them, you cannot fire any more.

Air. you gain a flying speed of 50 feet. additionally, ranged weapon attacks have a disadvantage against you.

Fire. when a creature comes within 15 feet of you for the first time, or end their turn there, they must make a dexterity saving throw. a creature takes 3d6 fire damage on a failed save, or half as much on a successful one. additionally, ranged spell attacks you make deal an additional 1d4 fire damage on a hit.

Water. when a creature comes within 10 feet of you for the first time, or end their turn there, they must make a strength saving throw. on a failed save, a creature takes 1d8 bludgeoning damage, and is pushed 10 feet away from you. additionally, your armor class increases by 2.