SFS Standard Cloying Shadows [two-actions] Focus 4

Range 60 feet
Targets 10-foot burst
Defense Fortitude

You command creatures' shadows to writhe and write and rebel against their owners. Each creature in the area takes 6d6 cold damage.
Critical SuccessThe target is unaffected.
SuccessThe target takes half damage.
FailureThe target takes full damage and is sickened 1.
Critical FailureThe target takes double damage and is sickened 2.

Heightened (+1) The cold damage increases by 2d6.