/BOOM/
The room erupted into chaos as a sudden explosion engulfed the space where Callius had stood. The force of the blast sent debris flying in all directions, leaving the assailants stunned and disoriented. None of them was expecting such a thing to happen at all, as they all had seen the mana reserves of him being depleted to the minimum.
The assailants were thrown back by sheer force, their bodies battered and broken by the unleashed might of Callius' final gambit. Amidst the debris and chaos, their forms crumpled, defeated, and vanquished.
Since none of them had sensed magic being activated, and neither did they expect Callius to blow himself off, their defenses were close to zero making all of them injured.
The leader staggered backward, shielding his face from the blast, but not to avail as he, too, was caught off guard. "AAAAH!" A painful scream echoed inside the room as the face of the leader was burned.