All she did was raise one hand to mime peering through a pair of binoculars. Even if it was clear those were military binoculars used to designate attack coordinates via laser or GPS, it should not have been clear just what kind of attack it would be.

[...]

“An aerial support…Big Bang Bomb!!!???”

This was only targeted at the Mimetic Predators crawling around the area. And they had the misfortune to be biologically based instead of being inorganic weapons. They too could “picture” the weapon, so it was drawn with hopeless detail in the back of their minds. There was an explosion that only they could sense.

That 10^-44 seconds may have been more valuable than an eternity.

Cold rain continued to pour down on the late night parking lot. Physically, not a single leaf floating in a puddle was harmed and not a drop of water was evaporated, but hundreds, thousands, or tens of thousands of organism weapons were blown into the air, swept away, vaporized, and thoroughly contaminated to the last cell. This was not just on a planetary scale. This blew away the entire “world” including every last galaxy and nebula. For those chosen as a target, there was no escape. The meaning of what was “possible” was cruelly distorted. This far exceeded a neutron bomb or pure fusion bomb and added a much-too-evil attack to human history.

[...]

“Blasting Rod. In other words, that power will be multiplied tenfold from my opponent’s point of view.”

She finally exceeded the limits of the existing universe.

This had originally been a secret technique meant to take on every last Magic God at once. Even if the one taking the damage had a limit to their imagination, her enemy’s mind would be mercilessly blown away by enough energy to create the universe ten times over.

Toaru Majutsu no Index New Testament vol.19 ch.3 pt.9