As the name suggest, the axiom is focused on destruction and violence. From dart guns to bladed weapons to disintegration cannons, it covers any harmful weapon a genius can devise. As the genius grows, he's able to build more increasingly destructive weapons and anything built with Katastrophi, even something like a scanner, has the dual capability to harm or destroy. It can pierce armors and devestate defenses. It's also the only sure-fire way to break through Prostasia defenses.
Its lowest use ranges from stunners to energy drainers, but as skills ascends, eventually one can build wonders that can devastate cities.