Several sharp ringing noises echoed between the walls and intensified as they approached.  They rounded a corner and found thirty guards stacked on both sides of the cell door, awaiting the order to enter.  The soldier pony’s faces bore hardened resolve, but Celestia could easily see the fear in the guards' eyes.  They knew full well that at any moment they may have to charge in and subdue the intimidating creature.   The furious din resounded from the cell; it sounded  like a hammer smacking a steel anvil.  Each strike was accompanied by a bright flash of white light, clearly visible through an open metal window in the door.  The racket was muffled yet still loud enough to make Celestia’s ears hurt.  Each crack rang out at intervals of a few seconds, pausing occasionally for a moment before resuming relentlessly.  