The idea behind the crystal armor was ingenious, but the armor was mostly meant for fending off attacks from meteor armor. Such close-quarter cutting by air currents was sharper and deadlier than that of sword aura of golden grand sword masters.
The thing is, the air currents were of short duration. If they missed their target and were intercepted by equipment like the crystal armor, follow-up attacks would have been needed.
Armors usually weren't designed this way, because that crystal armor was not really effective against common types of physical attacks.
A huge furry hand extended from the other side of the black vortex while both the skeleton and the angel were whipping the abominations about with their bludgeoning weapons, catching Rafel's meteor hammer.
Powerful explosions blasted through that hammer, forcing intense air currents through cracks on the head, wringing itself free.
