The pill that the human commander was about to consume was the same pill that the human general that fought 1-on-1 against Matthew back then used. The pill forcibly forced out the aura from the general's aura core and enhanced his whole body with aura.
But of course, with such a forceful approach to reaching the full-body aura enhancement, of course, there would be drawbacks such as being unable to lift even a finger up after the pill had lost its effect, which essentially means death in a battlefield where even a full second of invulnerability could cost you your life.
And now that the human commander knew that he would lose sooner or later if the status quo continued, he decided to take a huge gamble and defeat the two kobolds as fast as possible before using the pill's effect to brace himself through the fire and ran away as fast as possible from the battlefield before the pill's side effects kicked in and rendered him immobile.
