uncommon aura cleric evocation 

Domain destruction

Cast [>>] somatic, verbal

Area 15-foot emanation

Duration 1 minute

Swirling sands of divine devastation surround you, weakening the defenses of all they touch. Reduce the resistances of creatures in the area (including yourself) by 2.

Heightened (+2) Reduce the resistances by an additional 2.

Core Rulebook, page 391.