kicks a fire extinguisher into a spear, runs away

They burst from the walls, floor, and ceiling.
The entire scenery grew distorted and undulated. Countless spears of countless sizes shot
out and rushed toward him like a torrential downpour.
A simple calculation suggested there were one hundred Chambords for each St. Germain
present.
This oddity of a spell allowed them to control diamonds, carbon, and thus this entire
building.
There was no way Kamijou could negate every attack with just his right hand.
So the action he took was simple.
He kicked up the fire extinguisher sitting nearby and shoved it forward.
As soon as it came into contact with the spears, compressed gas exploded out. The fire
extinguishing powder looked more pink than white as it covered everything. Visibility
dropped to zero. The countless spears filled the entire space in a lattice pattern and cleanly
sliced through the barrier of powder.
But Kamijou was already gone.
Only the fire extinguisher remained, torn to shreds and pinned in midair.
(I was right.)
The group of St. Germains seemed to have shifted their focus toward the destroyed door
to the elevator shaft.
However, Kamijou had run through the smokescreen and passed right by them.

- New Testament Volume 12 Chapter 3 Part 1