The Caster Rifle, a devastating weapon developed by Kali, the weapon is composed of several turbines that launch one of about twenty different shells at the target.  Although many of these shells are deadly, shells 1 - 3 are by far the worst drawing on Kali's own life force to release a massive wave of concentrated energy at the opponent.  Using all three shells one right after another could result in death of the user.  Even using one of the shells while weakened could result in the death of Kali.