From Pathfinder Rage of Elements, which isn't enabled.

Pulverizing Cascade

FOCUS 3

UNCOMMON CONCENTRATE FOCUS MANIPULATE WATER

Cast

Range 120 feet

Area 10-foot burst

Defense basic Reflex

You raise a pair of towering waves and slam them into each other, crushing creatures caught between them. Creatures in the area take 5d6 bludgeoning damage with a basic Reflex save.

Heightened (+1) Increase the damage by 2d6.

Pathfinder Rage of ElementsOGL