Elemental Cataclysm

The raw fury of the elemental planes, unleashing a devastating surge of fire, water, air, and earth in a 40-foot radius sphere centered on a point he can see within range.

 Each creature in the area must make a DC 19 Dexterity saving throw. On a failed save, a creature takes:

 6d8 fire damage (searing flame)

6d8 cold damage (freezing wave)

6d8 thunder damage (howling wind)

6d8 bludgeoning damage (crushing stone)

 On a successful save, the creature takes half damage.

 Additional Effects:

The terrain in the area becomes difficult terrain until cleared.

Non-magical objects in the area are destroyed or scattered.

Elemental spirits briefly manifest, whispering in Primordial before vanishing.