"Stampede"

The rainwater was not mixed with anything else, and with the help of snow and ice elemental ability users, the rainwater turned into sharp icicles. 

Then, snow started to pour down from the flashing clouds, and as more snow fell,  the raging tornadoes slowly created a blizzard that blocked the monsters' and beasts' eyesight. 

The blizzard and the ice rain came fast, instantly engulfing many beasts and monsters with great destructive power. 

A lot of beasts and monsters were blown away, frozen to death, stabbed by the icicle rain, got buried underneath the snow, or torn apart by the tornadoes. 

Even the beasts' thick fur and monsters' hard skin could not stop them from being turned into frozen statues! 

The temperature was really low, and because the ice was made by an ability user, its degree of coldness, plus the various attack abilities were way beyond what a normal ice and blizzard should be.