Rain of Razors

Razor-sharp slivers of metal fall from the sky. Each creature in a 20-foot area within 60 feet takes (scaling+9)d6[slashing|options:area-damage] damage with a reflex save against your class DC. The razors embed in all surfaces in the area, making them hazardous terrain for 1 minute. A creature that moves through this hazardous terrain takes (scaling+3)[slashing] damage for every square of the area it moves into.

Level (+2) The initial damage increases by 1d6 and the hazardous terrain damage increases by 1.