The Superchiller rune replicated what Akane had done with her Elemental Mastery jutsu: cooled the air until the warmth-loving sky spirits became so infuriated that they tore the world apart for miles around. Except comparing the Superchiller rune to a mere chūnin-cast jutsu was like comparing a mountain to a grain of sand. The rune itself had never been activated, only various non-functional prototypes during the development process. Nonetheless, it wasn't an especially difficult rune. In fact, it was ridiculously easy for something so destructive. He wasn't exactly sure how big the area of effect or duration would be, but his best guess was it would be at least hundreds of meters across and last several weeks. The Elemental Mastery jutsu had been perhaps twenty meters and a few hours, and it produced a storm twenty kilometers across and so potent that it scoured the earth.
Hazō Prime had planned for this. If things went wrong, if it looked certain that Deidara would either win or escape, it was HazōFreezeBabyFreeze's job to trigger the Superchiller rune and kill everything and everyone around. Hazō didn't know if the effect would reach outside the Force Dome that was currently over the battlefield; if it did then it might well scour a country. He was sure that the rune itself would survive its own effects. If it didn't...well, add 'runic failure' to the hurricane-force winds and freezing everything.