he raised it over his head , and then brought it down with one swift , arching strike that landed between the heads of drelrei and junisia at the exact spot of their surgical conjoinment , then sliced the tantradox in half as cleanly as razorwire and as suddenly as a thunderbolt , so that the crimson blade of the soul cleaver resheathed itself in the ground just as it had been sheathed moments ago in the ceiling above .